The game does launch and basically works. Unfortunately my computer is kind of garbage and runs the game at a steady 8 FPS, and I also don't have a second player to race with, so this may not be the most fair review ever.
However I was pleasantly surprised and delighted by how nice the controls were on the gamepad. This game doesn't approach anything resembling real car physics, but it's intuitive and I never got stuck so it was fun to just drive around. The ability to undo a major mistake was also nice. I think my only criticism, besides the performance which is more my fault than yours (at least in the scope of a game jam where you can't really afford to add twenty quality options to ensure a wide variety of system compatibility) is that the camera kind of makes me want to puke. 90% of the time it follows exactly where I should want to look, but that last 10% when it feels like it's just doing it's own thing was rough especially at my frame rate.
Good job and thanks for the Linux port!