First of all, there is an AI regulating how the other participants work. That alone deserves a thumb up.
Then, the author took care of the aesthetic, both with a custom main menu, a nice soundtrack and a clear UI/UX (power-ups as symbols, visible effects, a menu where to pick your driver): all these things require a lot of effort, so chapeau for the work done, especially considering that there was a window of time of 20 days.
My critiques derive from the laggy camera and the overall speed. About the former, I don't know if it's because of a MT limitation (with the author trying to find a workaround), but it makes me also think about whether MT can actually feature fast paced games like racing games or not. I should investigate the code to have an answer but... I'll leave the pleasure to others. About the overall speed, I think it was too slow, and that the turbo boost was too short.
The game is definitely not finished (for instance, there are no laps) and I don't know if it's well suited for an engine like MT, but I expect to see at least a special mention to this: congratulations to the author.
(as I've said below another 2021 Jam game, consider converting it into a minigame with arena_lib)