Hi! I would like to continue this game but I couldn’t find the time yet. I can help you with the physics, though. For the car movement I tried a few different solutions that didn’t work the way I wanted (like using godot’s VehicleBody or the rolling sphere technique). Eventually, I found this article: Simple 2D car steering physics in games. It’s really easy to follow and with a few tweaks I think it works great. For the collisions I implemented basic elastic collision (like this: billiards-physics) but since the cars are not spheres it didn’t work quite like I wanted. I didn’t have much time to try something better so I just tweaked it a bit and called it a day. I don’t really like the end result, though. If you want to take a look I made a racetrack generator tool with the option to test drive the tracks it generates. It’s not exactly the same code I used in the game but it should be pretty close. It’s open source, so feel free to use it however you like. I just ask that you don’t use the car models, please. Also, let me know when your game comes out. I would really like to play it.