I think that developing a whole 3D infinite runner game within week was a way too ambitious idea for this jam. I appreciated that you did your best to make sure the player would feel immersed by adding both music and sound effects, but the game has many major bugs, such as invisible main menu, infinite jump/slide, and gaps in the road that the player can use to escape it.
I think that the lesson you learned from this jam was to always manage your project's scope according to the time you have, because if you had more, I'm pretty sure you would have fixed these bugs and further polished the game.
Regardless, I hope you had fun and learned how to develop some game features in this jam, because this is what a jam is all about!