Great game!
Suggestion:
I'd get rid of the fog entirely and turn down the bloom as it can make it hard to see where to go next in races. I found the handling to be too floaty overall but it was mitigated a bit with upgrades. Mainly when hooking up from a drift I found myself fishtailing whenever it would hook back up. Maybe make the starting stats a bit grippier and then the upgrades even more so. Also for the map icons you could create race ui icons notifying whether or not a race is a time trial or a ai race. Same for the shops so you wouldn't have to figure it out for the first time by driving there to see what the arbitrary colored icons mean. I know the game is still in alpha so I'm sure you're addressing all of these and a lot more but these are a few suggestions cause this has a lot of potential.
Good luck :)