I’ve seen a few attempts at making procedural racing games based on street map data from Google Maps and other sources [1] [2], but because the maps are often imprecise from a collision standpoint, the results can tend to be pretty janky.
Unfortunately I can't really give any meaningful feedback on this game because every time I try to start a race, it just shows a character parachuting down...
[1] - https://github.com/gre-42/MGame
[2] - https://steamcommunity.com/app/2599450