Car flies everywhere

So I setup the basic car in PhAT. Did everything like it said here.
( https://docs.unrealengine.com/latest/INT/Engine/Physics/Vehicles/VehcileContentCreation/index.html )
What am I doing wrong and how can I fix this?

Thank You

What modeling software did you use ?
I’m having the same issue, i modeled and rigged it with blender.
I read here that export orientation and root origin may solve this, but they are using Maya or 3DSmax, so i didn’t work with me.
Try This

Delete the rig from your car. Parent all 4 wheels to the car and re-import into unreal.
I had this issue but this did the job for me