void Mo::increaseMobility(){
    
    Mo* mo = this;
    Parents* parents = mo->getParents();
    if (getToday() == Date::Monday){
        parents->buyCar(new Car(parents->getNewCarName()));

    }  else if (getToday() == Date::Sunday){
        mo->addCar(parents->getOldCar()); 
        mo->mobility++;

       cout << "Yeah, Baby!" << endl;
   }
}