Vehicle froze in the air when simulating physics

After following multiple tutorials and spending hours looking for a solution I am still no closing to finding one.
The problem is my batmobile vehicle freezes up in the air when I press play in the level or simulate physics in the physics asset.
I have created new a body for each component experimenting with all types and made sure the wheels are kinematic but nothing effects the vehicles body from falling. The wheels work fine in the level rotating and receiving input correctly but they can’t move the vehicle as its stuck in the air. I suspect the problem is due to some physics property or a rigging problem, but from what I can see the rig is correct and should be fine. Perhaps its the body not responding to physics, vehicle mass or gravity, I honestly don’t have a clue at this point. Any suggestions to fix this problem would be deeply appreciated.