diff --git a/src/08_PTRN/CMakeLists.txt b/src/08_PTRN/CMakeLists.txt
index 2287a8e..20d7803 100644
--- a/src/08_PTRN/CMakeLists.txt
+++ b/src/08_PTRN/CMakeLists.txt
@@ -1 +1,2 @@
-add_executable(08_PTRN_MP MP/Money.cpp MP/Money.h MP/Currency.cpp MP/Currency.h MP/main.cpp MP/BankAccount.cpp MP/BankAccount.h MP/Storage.cpp MP/Storage.h)
\ No newline at end of file
+add_executable(08_PTRN_MP MP/VehicleFactory.cpp MP/VehicleFactory.hpp MP/Vehicle.cpp MP/Vehicle.hpp MP/Car.cpp MP/Car.hpp MP/Truck.cpp MP/Truck.hpp MP/Logger.cpp MP/Logger.hpp MP/main.cpp)
+add_executable(08_PTRN_Testat Testat/main.cpp Testat/Money.cpp Testat/Money.h Testat/Logger.cpp Testat/Logger.hpp Testat/Currency.h Testat/BankAccount.cpp Testat/BankAccount.h)
\ No newline at end of file
diff --git a/src/08_PTRN/MP/BankAccount.cpp b/src/08_PTRN/MP/BankAccount.cpp
deleted file mode 100644
index 7bd510e..0000000
--- a/src/08_PTRN/MP/BankAccount.cpp
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <utility>
-
-#include <utility>
-
-#include "BankAccount.h"
-
-BankAccount::BankAccount(std::string owner, Money money) : owner(std::move(owner)), money(money){}
diff --git a/src/08_PTRN/MP/BankAccount.h b/src/08_PTRN/MP/BankAccount.h
deleted file mode 100644
index 97884cb..0000000
--- a/src/08_PTRN/MP/BankAccount.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef C_C_BANKACCOUNT_H
-#define C_C_BANKACCOUNT_H
-
-
-#include <string>
-
-#include "Money.h"
-
-class BankAccount {
-private:
-    std::string owner;
-    Money money;
-
-public:
-    BankAccount(std::string owner = "none", Money money = Money(0, Storage().USD));
-};
-
-
-#endif
diff --git a/src/08_PTRN/MP/Currency.cpp b/src/08_PTRN/MP/Currency.cpp
deleted file mode 100644
index 84851e9..0000000
--- a/src/08_PTRN/MP/Currency.cpp
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <utility>
-
-#include "Currency.h"
-
-Currency::Currency(std::string name, float rate) : name(std::move(name)), rate(rate) {}
-
-bool Currency::operator==(Currency &currency) {
-    return name == currency.name;
-}
diff --git a/src/08_PTRN/MP/Currency.h b/src/08_PTRN/MP/Currency.h
deleted file mode 100644
index 9cd561d..0000000
--- a/src/08_PTRN/MP/Currency.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef C_C_CURRENCY_H
-#define C_C_CURRENCY_H
-
-
-#include <string>
-
-class Currency {
-public:
-    std::string name;
-    float rate;
-    Currency(std::string name, float rate);
-    bool operator==(Currency &currency);
-
-};
-
-
-#endif
diff --git a/src/08_PTRN/MP/Money.cpp b/src/08_PTRN/MP/Money.cpp
deleted file mode 100644
index 980cc3c..0000000
--- a/src/08_PTRN/MP/Money.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-#include <utility>
-
-#include "Money.h"
-
-Money::Money(float value, Currency currency) : value(value), currency(std::move(currency)) {}
-
-Money Money::operator+(Money money) {
-    return Money((this->value * this->currency.rate) + (money.value * money.currency.rate), this->currency);
-}
-
-Money Money::operator-(Money money) {
-    return Money(this->value - money.value, this->currency);
-}
-
-Money Money::operator*(Money money) {
-    return Money(this->value * money.value);
-}
-
-Money Money::operator/(Money money) {
-    return Money(this->value / money.value);
-}
-
-const Money Money::operator++(int) {
-    this->value++;
-    return *this;
-}
-
-const Money Money::operator--(int) {
-    this->value--;
-    return *this;
-}
-
-bool Money::operator==(Money &money) {
-    return this->value == money.value && this ->currency == money.currency;
-}
diff --git a/src/08_PTRN/MP/Money.h b/src/08_PTRN/MP/Money.h
deleted file mode 100644
index 96559a8..0000000
--- a/src/08_PTRN/MP/Money.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef C_C_MONEY_H
-#define C_C_MONEY_H
-
-#include "Currency.h"
-#include "Storage.h"
-
-/**
- *
- *
- * @author Johannes Theiner <kontakt@joethei.xyz>
- * @since 0.0.1
- */
-class Money {
-private:
-    float value;
-    Currency currency;
-public:
-    explicit Money(float value = 0, Currency currency = Storage().currencies["USD"]);
-    Money operator+(Money money);
-    Money operator-(Money money);
-    Money operator*(Money money);
-    Money operator/(Money money);
-    const Money operator++(int);
-    const Money operator--(int);
-    bool operator==(Money &money);
-};
-
-#endif
diff --git a/src/08_PTRN/MP/Storage.cpp b/src/08_PTRN/MP/Storage.cpp
deleted file mode 100644
index eb94cff..0000000
--- a/src/08_PTRN/MP/Storage.cpp
+++ /dev/null
@@ -1 +0,0 @@
-#include "Storage.h"
diff --git a/src/08_PTRN/MP/Storage.h b/src/08_PTRN/MP/Storage.h
deleted file mode 100644
index 98789fa..0000000
--- a/src/08_PTRN/MP/Storage.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef C_C_STORAGE_H
-#define C_C_STORAGE_H
-
-
-#include <unordered_set>
-#include <unordered_map>
-#include "Currency.h"
-#include "BankAccount.h"
-
-class Storage {
-public:
-    std::unordered_map<std::string, BankAccount> accounts;
-    static const Currency USD = Currency("US Dollar", 1);
-    static const Currency EUR = Currency("Euro", 0.879699);
-    static const Currency GBP = Currency("British Pound", 0.783667);
-    static const Currency AUD = Currency("Australian Dollar", 1.36962);
-    static const Currency CAD = Currency("Canadian Dollar", 1.33023);
-};
-
-
-#endif
diff --git a/src/08_PTRN/MP/main.cpp b/src/08_PTRN/MP/main.cpp
index e74ede1..bcbed14 100644
--- a/src/08_PTRN/MP/main.cpp
+++ b/src/08_PTRN/MP/main.cpp
@@ -1,13 +1,71 @@
-#include <unordered_set>
-#include <unordered_map>
+#include "Car.hpp"
+#include "Truck.hpp"
+#include "Logger.hpp"
+#include "VehicleFactory.hpp"
 
-#include "Currency.h"
-#include "BankAccount.h"
-#include "Storage.h"
+#include <iostream>
+#include <vector>
 
-Storage storage;
+void workOnCopy_naive(std::vector<Vehicle*> vehicles){
+  std::vector<Vehicle*> tempVec;
+  for (int i=0; i<vehicles.size(); i++){
+    Vehicle * currentVehicle = vehicles[i];
+    Car*   carToCopy   = dynamic_cast<Car*>(currentVehicle);  // RTTI type check
+    Truck* truckToCopy = dynamic_cast<Truck*>(currentVehicle);// may be nullptr
+    if(carToCopy){
+      tempVec.push_back(new Car(carToCopy->model(), carToCopy->maxWeight())); // type dependency to Car
+    }else if(truckToCopy){
+      tempVec.push_back(new Truck(truckToCopy->model(), truckToCopy->payload_kg())); // type dependecy
+    }else{
+      // TODO: what do we do here?
+      // Did someone add a new class to the code base?
+      return; // BUG: copies aren't free'd
+    }
+  }
+  // work on copies ...
+  // ...
+  for(auto vehi : tempVec){
+    std::cout << vehi->model() << " " << vehi->payload_kg() << " kg" << std::endl;
+  }
+  for (int i=0; i<tempVec.size(); i++){
+    delete tempVec[i];
+  }
+  tempVec.clear();
+}
 
-int main(int argc, char **argv) {
+void workOnCopy_smart(std::vector<Vehicle*> vehicles){ // uses RAII, virtual ctor
+  
+  class RAIIvector { // local RAII helper class
+  public:
+    std::vector<Vehicle*> tempVec;
+    ~RAIIvector(){
+      for(auto vehi : tempVec){
+        delete vehi;
+      }
+      tempVec.clear();
+    }
+  };
+  RAIIvector rv;
+  
+  for(auto vehi : vehicles){
+    rv.tempVec.push_back(vehi->clone());
+  }
+  // work on copies ...
+  // ...
+  for(auto vehi : rv.tempVec){
+    std::cout << vehi->model() << " " << vehi->payload_kg() << " kg" << std::endl;
+  }
+  // compiler WILL invoke RAIIvector::~RAIIvector() here
+}
 
-    storage.accounts.insert(BankAccount("Max Maier", Money(50, Storage().EUR)));
-}
\ No newline at end of file
+
+int main(int argc, const char * argv[]) {
+  std::vector<Vehicle*> vehicles;
+  vehicles.push_back(vehicleForPayload("Volkswagen Golf", 900)); // use factory for construction
+  vehicles.push_back(vehicleForPayload("Magirus Deutz", 18*1000));
+  Logger::getInstance()->log("work naively", __FILE__, __LINE__);
+  workOnCopy_naive(vehicles);
+  Logger::getInstance()->log("work smartly", __FILE__, __LINE__);
+  workOnCopy_smart(vehicles);
+  return 0;
+}
diff --git a/src/08_PTRN/MP/main_old.cpp b/src/08_PTRN/MP/main_old.cpp
deleted file mode 100644
index bcbed14..0000000
--- a/src/08_PTRN/MP/main_old.cpp
+++ /dev/null
@@ -1,71 +0,0 @@
-#include "Car.hpp"
-#include "Truck.hpp"
-#include "Logger.hpp"
-#include "VehicleFactory.hpp"
-
-#include <iostream>
-#include <vector>
-
-void workOnCopy_naive(std::vector<Vehicle*> vehicles){
-  std::vector<Vehicle*> tempVec;
-  for (int i=0; i<vehicles.size(); i++){
-    Vehicle * currentVehicle = vehicles[i];
-    Car*   carToCopy   = dynamic_cast<Car*>(currentVehicle);  // RTTI type check
-    Truck* truckToCopy = dynamic_cast<Truck*>(currentVehicle);// may be nullptr
-    if(carToCopy){
-      tempVec.push_back(new Car(carToCopy->model(), carToCopy->maxWeight())); // type dependency to Car
-    }else if(truckToCopy){
-      tempVec.push_back(new Truck(truckToCopy->model(), truckToCopy->payload_kg())); // type dependecy
-    }else{
-      // TODO: what do we do here?
-      // Did someone add a new class to the code base?
-      return; // BUG: copies aren't free'd
-    }
-  }
-  // work on copies ...
-  // ...
-  for(auto vehi : tempVec){
-    std::cout << vehi->model() << " " << vehi->payload_kg() << " kg" << std::endl;
-  }
-  for (int i=0; i<tempVec.size(); i++){
-    delete tempVec[i];
-  }
-  tempVec.clear();
-}
-
-void workOnCopy_smart(std::vector<Vehicle*> vehicles){ // uses RAII, virtual ctor
-  
-  class RAIIvector { // local RAII helper class
-  public:
-    std::vector<Vehicle*> tempVec;
-    ~RAIIvector(){
-      for(auto vehi : tempVec){
-        delete vehi;
-      }
-      tempVec.clear();
-    }
-  };
-  RAIIvector rv;
-  
-  for(auto vehi : vehicles){
-    rv.tempVec.push_back(vehi->clone());
-  }
-  // work on copies ...
-  // ...
-  for(auto vehi : rv.tempVec){
-    std::cout << vehi->model() << " " << vehi->payload_kg() << " kg" << std::endl;
-  }
-  // compiler WILL invoke RAIIvector::~RAIIvector() here
-}
-
-
-int main(int argc, const char * argv[]) {
-  std::vector<Vehicle*> vehicles;
-  vehicles.push_back(vehicleForPayload("Volkswagen Golf", 900)); // use factory for construction
-  vehicles.push_back(vehicleForPayload("Magirus Deutz", 18*1000));
-  Logger::getInstance()->log("work naively", __FILE__, __LINE__);
-  workOnCopy_naive(vehicles);
-  Logger::getInstance()->log("work smartly", __FILE__, __LINE__);
-  workOnCopy_smart(vehicles);
-  return 0;
-}
diff --git a/src/08_PTRN/Testat/BankAccount.cpp b/src/08_PTRN/Testat/BankAccount.cpp
new file mode 100644
index 0000000..af0767b
--- /dev/null
+++ b/src/08_PTRN/Testat/BankAccount.cpp
@@ -0,0 +1,17 @@
+//
+// Created by JThei on 01.12.2018.
+//
+
+#include "BankAccount.h"
+
+BankAccount::BankAccount(std::string name) : name(std::move(name)) {}
+
+void BankAccount::add(Money _money) {
+    money = money + _money;
+}
+
+bool BankAccount::operator<(BankAccount a) {
+    return false;
+}
+
+
diff --git a/src/08_PTRN/Testat/BankAccount.h b/src/08_PTRN/Testat/BankAccount.h
new file mode 100644
index 0000000..33c97ba
--- /dev/null
+++ b/src/08_PTRN/Testat/BankAccount.h
@@ -0,0 +1,23 @@
+//
+// Created by JThei on 01.12.2018.
+//
+
+#ifndef C_C_BANKACCOUNTS_H
+#define C_C_BANKACCOUNTS_H
+
+#include <unordered_map>
+
+#include "Money.h"
+
+class BankAccount {
+private:
+    std::string name;
+    Money money;
+public:
+    explicit BankAccount(std::string name);
+    void add(Money money);
+    bool operator<(BankAccount a);
+};
+
+
+#endif //C_C_BANKACCOUNTS_H
diff --git a/src/08_PTRN/Testat/Currency.h b/src/08_PTRN/Testat/Currency.h
new file mode 100644
index 0000000..344ab84
--- /dev/null
+++ b/src/08_PTRN/Testat/Currency.h
@@ -0,0 +1,17 @@
+//
+// Created by JThei on 01.12.2018.
+//
+
+#ifndef C_C_CURRENCY_H
+#define C_C_CURRENCY_H
+
+enum class Currency {
+    USD=100,
+    EUR=80,
+    GPD=75
+};
+
+
+
+
+#endif //C_C_CURRENCY_H
diff --git a/src/08_PTRN/Testat/Logger.cpp b/src/08_PTRN/Testat/Logger.cpp
new file mode 100644
index 0000000..29df18d
--- /dev/null
+++ b/src/08_PTRN/Testat/Logger.cpp
@@ -0,0 +1,15 @@
+// file Logger.cpp
+#include "Logger.hpp"
+
+Logger* Logger::_theInstance = nullptr;
+
+Logger* Logger::getInstance(){
+  if (!_theInstance){
+    _theInstance = new StdoutLogger();
+  }
+  return _theInstance;
+}
+
+void StdoutLogger::log(std::string message, std::string file, int line){
+  std::cerr << message << " in " << file << " line " << line << std::endl;
+}
diff --git a/src/08_PTRN/Testat/Logger.hpp b/src/08_PTRN/Testat/Logger.hpp
new file mode 100644
index 0000000..9b3006c
--- /dev/null
+++ b/src/08_PTRN/Testat/Logger.hpp
@@ -0,0 +1,19 @@
+// file Logger.hpp
+#ifndef Logger_hpp
+#define Logger_hpp
+
+#include <iostream>
+
+class Logger {
+  static Logger* _theInstance;
+public:
+  virtual void log(std::string message, std::string file="", int line=0) = 0;
+  static Logger* getInstance();
+};
+
+class StdoutLogger: public Logger {
+public:
+  void log(std::string message, std::string file="", int line=0);
+};
+
+#endif
diff --git a/src/08_PTRN/Testat/Money.cpp b/src/08_PTRN/Testat/Money.cpp
new file mode 100644
index 0000000..893c3de
--- /dev/null
+++ b/src/08_PTRN/Testat/Money.cpp
@@ -0,0 +1,37 @@
+//
+// Created by JThei on 01.12.2018.
+//
+
+#include "Money.h"
+
+Money::Money(int value, Currency currency) : value(value), currency(currency) {
+
+}
+
+Money Money::operator+(Money &a) {
+    return Money();
+}
+
+Money Money::operator-(Money &a) {
+    return Money();
+}
+
+const Money Money::operator++(int) {
+    return Money();
+}
+
+const Money Money::operator--(int) {
+    return Money();
+}
+
+bool Money::operator==(Money &a) {
+    return false;
+}
+
+bool Money::operator!=(Money &a) {
+    return false;
+}
+
+Currency Money::getCurrency() {
+    return currency;
+}
diff --git a/src/08_PTRN/Testat/Money.h b/src/08_PTRN/Testat/Money.h
new file mode 100644
index 0000000..1b9a1de
--- /dev/null
+++ b/src/08_PTRN/Testat/Money.h
@@ -0,0 +1,28 @@
+//
+// Created by JThei on 01.12.2018.
+//
+
+#ifndef C_C_MONEY_H
+#define C_C_MONEY_H
+
+
+#include "Currency.h"
+
+class Money {
+private:
+    int value;
+    Currency currency;
+public:
+    explicit Money(int value = 0, Currency currency = Currency::USD);
+    Money operator+(Money &a);
+    Money operator-(Money &a);
+    const Money operator++(int);
+    const Money operator--(int);
+    bool operator==(Money &a);
+    bool operator!=(Money &a);
+
+    Currency getCurrency();
+};
+
+
+#endif //C_C_MONEY_H
diff --git a/src/08_PTRN/Testat/main.cpp b/src/08_PTRN/Testat/main.cpp
new file mode 100644
index 0000000..3adb79b
--- /dev/null
+++ b/src/08_PTRN/Testat/main.cpp
@@ -0,0 +1,15 @@
+
+
+#include <set>
+#include "Currency.h"
+#include "BankAccount.h"
+
+
+int main(int argc, char **argv) {
+//    std::set<BankAccount> accounts;
+//
+//    accounts.insert(BankAccount("Max"));
+//    accounts.insert(BankAccount("Max"));
+//    accounts.insert(BankAccount("Marius"));
+//    accounts.insert(BankAccount("Test"));
+}
\ No newline at end of file