How to animated planes/trains/buses/ETC?

So I was wondering how I can make a animated object I should say. Im not requesting it. I just want to know if I can use a plugin to make one. Like it be SUPER DOBER Easy to use a plugin. Like SimulatorX Wingflex on his new game "FlightWare" I really need help on this. Someone can help me out? Thanks! :D

1. Add a vehicle seat onto the vehicle
2. Set Throttle (in the properties) to 1 to make it go foward.
3. Set it to -1 for it to go backwards.