This is coming along pretty well. The leaderboard feels like a nice addition for the game. I didn't notice SilentWolf mentioned in the credits, or your devlog on adding the leaderboard. Since you are listing credits in game, you may want to update it to include them.
It would be nice if there was a way to end gameplay early, other than accelerate to max speed and derail. Perhaps adding Q as a key to quit to menu, or even P for a pause screen, which could include the volume settings as well as a quit to menu button. Speaking of volume, I noticed that the volume settings did not save. Not a major thing, but something that would be nice to see in the future.