Cars spawn in front of the player

[snshn]

Due to the poor state of the physical engine implementation, parked vehicles often happen to "slide" downhill, which results in the same vehicle(s) spawning again in the same spot while the player's still around.

My wild guess is that the issue is not related to the physical engine as much as to the fact that in the vanilla engine vehicles do not spawn while the player character is positioned close to the spawnpoint.