Hi, i didn't play all the way through the game, but i have some feedback:
1. Make the controls a bit easier. The general controls are good, but adjust them a bit.
2. I know that you can hit these spheres with the cars behind you, but what are these spheres? Do they give me points? What are they for?
3. Add some music and sounds! :D
4. Use TextMeshPro instead of regular text and use a different font than arial.
Other than that, pretty unique concept. I hope my feedback helped you and it would be nice if you could check out my submission too. Thanks. :)