GTA Style Vehicle Interaction - Project File Included

I have been implementing enter-able vehicles and encountered problem as well. I had been searching for a solution and someone linked me topic.

So far I’ve been unable to actually solve the problem. , did you have any luck getting it to properly stop?
I’ve tried resetting input, setting velocity to 0, applying negative velocity, stop movement immediately, even calling VehicleMovementComponent’s ClearInput() function in C++ but it just keeps going D:
It’s as if Unposses is not properly resetting movement/input for vehicles.

Also, I noticed that vehicles do not handle/determine collision in the same way as other objects; I had an object without any collision but the vehicle can drive over it. The chassis would clip through like everything else though. Only the wheels collide.

Using UE version 4.5.1