This is a paid asset, but now you can download AVC – Arcade Vehicle Controller Free.
Detail this asset from Unity Store: Original Link
AVC – Arcade Vehicle Controller v1.12
Arcade Vehicle Controller (AVC) is a simple vehicle controller asset allowing you to create any type of vehicle – car, hover car, motorbike, boat. The customizable arcade-y feel to the vehicles gives a fun, satisfying, player experience to your vehicles.
Included is a Vehicle Builder editor window, which allows you to setup a new vehicle in seconds! Just link the required objects and fill in the details, press a button and you’ve got your new vehicle!
The values for a vehicle (speed, turning, drifting, etc.) are saved in a ScriptableObject, meaning you can re-use the same values for hundreds of different vehicles, and only have to tweak them in 1 place.
Also included, are examples of how to interact with the vehicle controller for player input and AI
Support available on the forum