First of all, great name! I love the colors and chill atmosphere. The tire collection and combat were pretty intuitive, even without instruction. It's fun to slap the other cars around with my ghost hand. I appreciate that the field of view can be expanded to get a better look at my surroundings.
I got stuck a few times, but was generally able to get unstuck. Sometimes I would have to reverse before being able to move forward, even if nothing was in front of me. Sometimes the speed boost seemed to work and other times, it didn't.
I may have gotten a bug at the end of level 2. When I went through the gate, I just came out the other side without changing levels. It counted my tires, but I couldn't proceed after that.
Overall, nice work, especially for the tight deadline!