@EmerGki: Ah progressive braking, I see. Using force damping like that is like engine braking which might not be what you want. Have you tried using zero force and only progressive torque instead? It's difficult to suggest the cause of the loss of control without seeing it in action, but it could be linked to the levels of mass and friction you're using for the car/wheels/highway.
@NA: The dBodyGetLinearVel(body) function returns a vector in ODE, which can't be returned to Blitz directly. You can either use the unique JV-ODE functions to return a specific vector component using dBodyGetLinearVelX(body), dBodyGetLinearVelY(body) or dBodyGetLinearVelZ(body). Or you can get the complete vector by calling dBodyGetLinearVel(body) and then use the vector functions like this...
dBodyGetLinearVel(body)
LVelX#=dVectorX()
LVelY#=dVectorY()
LVelZ#=dVectorZ()
@NA: The dBodyGetLinearVel(body) function returns a vector in ODE, which can't be returned to Blitz directly. You can either use the unique JV-ODE functions to return a specific vector component using dBodyGetLinearVelX(body), dBodyGetLinearVelY(body) or dBodyGetLinearVelZ(body). Or you can get the complete vector by calling dBodyGetLinearVel(body) and then use the vector functions like this...
dBodyGetLinearVel(body)
LVelX#=dVectorX()
LVelY#=dVectorY()
LVelZ#=dVectorZ()