Nice idea for the theme and quite fun!
What stood out the most to me was the ideas for the goal, the model for the player ship and the skybox. I also like that you included a minimap with the track overview.
Racing gameplay-wise it worked fine but I feel like it would be even more fun if hitting the race track edges would just make you slide along them a bit slower in a smooth way. Atm, it's very jittery.