com.jme3.bullet.control.VehicleControl over bridges

HI Guys
Ive recently moved form using BetterCharacterControl to VehicleControl to control the vehicles in my game. Its working pretty well and im getting far more realistic vehicle movement. However when the vehicle is crossing a bridge. ie a blender model

CollisionShape shape = collisionShapeFactoryProvider.createMeshShape(bridge);
RigidBodyControl r = new RigidBodyControl(shape, 0);

The vehicle accelerates uncontrollably. Its almost like it thinks the bridge doesn’t exist and is free falling. Yet is still travelling across the bridge staright… Just at a very fast speed.

Any help would be greatly appreciated


which i think is my issue