Car.Drive()because the Car class is just a description of what a Car object is and does. To call Drive on a Car object, you must create a Car object, e.g.
Dim myCar As New Car myCar.Drive()That's an example of what you're doing wrong. If you want information more specific to your particular case then provide us with information about your particular case.
Shared members are for functionality that is not tied to an instance of the class, you use the type name to qualify the instanceless shared member.Or you could also declare Drive as Shared, in which case you will be able to access it from the default instance.