It's cool that you managed to create two distinct 3D environments, and the low-poly models for the diverse vehicles look cute and great. I really enjoyed trying to survive as the speed increased up with each loop, and the chaotic AI drivers are quite funny to navigate around.
The only issue I noticed was that when I was assigned a truck in the city, it would often start the run already crashed. It might just be a small issue with the vehicle spawner on that map ?
Overall, a really solid, a bit quirky and fun game. Great job!