There should be a way for factions to spawn cars at the nearest parking location to them or just more locations anybody can spawn cars at around the map. I'm sure it's been thought about before, so there's probably some reasons there's one place to spawn a car. Maybe easily accessible cars could be a performance issue? Regardless of the possible issues it's just that for a lot of factions their business is across town from the car dealership and making the short, but tedious, trek back to the dealership every time they want a car can be annoying.