This game is really special for me, because i was able to create a driving physic from scratch. I used 4 Linetraces from an invisible chassis. The model of the car was attached onto the chassis and was held onto it by using a physic constraint. This had a great visual effect on the visible car.
Here are some screens from prototyping the physics:


And here is how it looked in the end:
I also did the map editor, where the player has to place track-tiles onto the map (just like you would on a tabletop game)
Screenshots