This is a pretty cool game! I think it was a pretty interesting way to incorporate the limitation, but I didn't feel too much incentive to change the gears that much once I got one that felt pretty good (generally I'd try to get one that slowly accelerates to a higher speed from what I could tell). Then again, I mostly stuck with the default car, so it could be that it doesn't really need you to shift gears much. Despite that, I enjoyed playing the game! I thought the music and visuals were well done too. Good job!