Separate gas and brake pedals are coming soon! Got them already working at home. Also analog controller support to properly throttle them. It's quite simply another game entirely (and a good thing for it). An upload will come soon. Still got some little bugs to iron out with the new audio channels (that you can configure through a proper menu!)
Audio scenery is an option I've been thinking about. I'm not sure it's appropriate for a 30 seconds lap XD. Like how far can you really get from those cows? It would also require a major redo of everything. None of these tracks exists anywhere in the game engine. They are just a couple of formulas. Creating the illusion of driving past a stationary sound source will probably be more complicated than everything done so far.
Thanks for playing and commenting, and stay tuned for major updates soon :)