You left such thoughtful feedback, so I'll try to return the favor: the drifting feels nice, and the particle effects give flavor to the driving. Handling-wise my favourite car was the one that drifted automatically, it had a good balance of speed and turning. It's great that there are so many different cars with different properties.
Nice minimalist artstyle. The grass tiles are a good midtone between the two main colors, and this added variation makes the tracks with grass more pleasing to look at than the ones without. If you feel like the tracks need more visual variation, I think that midtone is the way to go.
My main criticism was going to be how the black walls destroy all momentum, but I can see from your devlog that this is very intentional. If the black wall basically means reload the map (since reversing kills your time anyway), you could go all in on the masochism and just kill the player if they hit the wall: explosion -> instant restart -> try again. Maybe changes the nature of the game a bit too much though :D