This game is simple but incredibly satisfying. It’s also not full of junk and freemium crud.
I did find a bug(?) that you don’t get credit for painting a track if the person just ahead of you was the same color (painting red on red, for example), but you do as a different color. I just restarted and chose another color.
Maybe add different kinds of goals? Instead of just a simple 4 or 20 person race, another race type to see who goes the furthest at the end, or who paints the most.