That was fun to play! I liked trying to keep up with the yellow car, even going off-road as needed to catch up. Balancing the desire to power up vs. conserve gas was a good use of "Strength through Weakness;" do I want to take on the weakness of more easily getting a game over in order to power up in some manner?
It could be nice for the power-ups to spawn more randomly around the track rather than right behind the yellow car. Sometimes I would try to ram it from behind and accidentally pick up a newly-spawned power-up, which made me have to deal with the unexpected new gas-consumption weakness. Also, an arrow pointer toward the yellow car would be great when it's off-screen to know where to find it; the first time I tried it I hadn't even seen the yellow car, so I wasn't sure what I was supposed to do.
Great job!