Thanks for your comments.
You can slow down at any time. Just hold on the brakes and you'll eventually be standing still. To be clear, this is a very bad thing for your lap time XD
The tracks are not super complex. Most have something around 5 major turns, give or take some kinks. The track is always the same throughout the day and a new track is generated each day.
I like the idea of having some environmental sounds that would help the player get their location. That's what most games normally do. But for the record, real life car racing is 100% being stuck in a washing machine! This is something that drivers of many formulas have commented through the years. They love their public but they can't see them and they can't hear them, no matter how excitedly they do stuff to celebrate their going by.
I was planning on adding some track relief instead. Distinctive bumps and thunks that help you remember where you are and what's coming. That's closer to how drivers learn the tracks (besides the giant numbers with the distance to the turn most tracks have)