Jeg har 3 objeckt her:

Class Car {Datetime get;set;}
Class Bike {Datetime get;set;}
Class Train {Datetime get;set;}


Arraylist<Car>carlist = new Arraylist<Car>();
Arraylist<Bike >carlist = new Arraylist<Bike >();
Arraylist<Train >carlist = new Arraylist<Train >();


// hvordan man sortere dem her??