u can find them in parking lots where u can do stunts while driving your car
#Random ramps in the city
vague depot
if you've played any Gta games, you might know what i'm talking about
for those who dont get it, theres this really iconic thing in gta games where they put Ramps in certain places on the map where you can drive your vehicle on it and do some quick stunts while driving
Random ramps in the city
odd zephyr
Cheeky Escape route nor Chase Shortcut
"All you have to do is follow the damn train monster Agent" 
dire burrow
Add the sewers like in GTA and we got the perfect hiding/meeting place for cars