Driver holds steering wheel

Steering wheel copy rotation of the front wheel. Driver hands attached to sockets on the wheel.

Arms are moved using two bones IK, like described in previous post.

As a side note, UE4 example car used in this video has rather correct size, maybe just a little too narrow. But the seats are way too high. I had driver’s head all the way outside. Added bones for the seat and moved it like 20cm lower or so.