This game's idea is very promising! I was looking forward to playing it, but there were quite a few things I didn't like:
- The hitboxes. Even if you want the game to be hard, it needs to be fair. Each car should have a hitbox of its size or smaller, definitely not bigger.
- 50 cars. That's quite a lot for a game jam game. Try to aim for a shorter experience next time - less cars and perhaps a smaller map.
- Car progression. I think it would be better to have eazier cars in the beginning, rump up the difficulty over time.
- The music. I found it fitting at first, but it became too agressive later. When I'm reading the car's description, I don't want to feel all that thrill. Maybe lower the volume when there's no action?
- Car names. They don't have much of a purpose currently (they are random), but they could match the description for some eazier and faster reading!
I'm writing all this because I think your game could totally be a very fun one with a few improvements :). Keep it up and good job!