Checkpoints aside, the map is awesome. Very well done. Only thing I really don´t like are the low walls on the yellow part of the road where gravity pulls you down. Feels weird.
But the part where you go through a building as well as the part where it looks like you will crash into a wall are spectacular!

Hm, I'll try to fix the weird checkpoints, but not sure how to make it work. Thx for the feedback.

It seems that most checkpoints weren't aligned. That is to say, you respawn sideways respective to the road. And at least the one where the blue lasers even spawns you on the wrong side of the road.