I have built dream car builder cars that utilize independent braking of the rear wheels.
It requires using a/d for steering, and then creating two special actions one where if left (a) is pushed the left rear brake activates and if right (d) is pushed, the right rear brake is activated.

It works really great when you need to do tight turns in tight places.

The downside is having to use a/d to steer instead of way more flexible gamepad joystick.

Anyone have any idea on how to implement independent braking tied to joystick steering?