Special vehicles physics

Hello!

I’m trying to make a forklift for a train game, It will be used to load cargo onto the train cars.
I tried using Chaos but got some problems as follows:

  1. The vehicle will not move with the train car, just stay still in space when the train moves away, then fall off the end. Even if i wake the physics.
  2. When pushing down the forks on for example a pallet when stacking them, the vehicle do not lift itself but pushes the lower pallet trough the ground!
  3. I want very little and stiff suspension for lifting heavy items. (Can probably just config this).
  4. I dont want a lot of gears, just forward and reverse (Also probably easly configurable).

What are my alternatives when physics interactions is important? Just go for a pawn with physics constraints? Any suggestions are welcome!

Best regard
JayZone80