Hey Bax I know a way to get trought 20k meters. So all you need to do is die at there and revive, bc they gona dispawn if you die. You can only make this when you are alone I hope it helps. From: David
I kept moving when i reahed the bridge for more speed and it works perfectly,i also got to 11k Meter in only half an hour by skipping some houses and i also used normal van.