Mine glitches out randomly and doesn't work, I've noticed a few things happen before the car will sell.
1. You spawn outside of the car but still have the car, upon selling again it sells the car automatically for some reason. (Fix) just repeat buying something, pulling out and saving and repeating the normal process.
2. You'll spawn inside LSC 5-10 times in a row and then spawn back outside. I've noticed a few times its done that, and I sold it after spawning outside again it sells the car also. (Fix) same as above
3. Someone shoots you with a rocket... Wait.. That's just people trying to stop us, never mind. lol
After every million now I pull out, bank, smash the car a little and fix it up. Pull out if LSC let the cloud save, switch to campaign and switch back so you know the spawn location is saved. Rinse and repeat, I haven't sold a car since I started doing it.
On XBL btw
Edited by OffroadRunner, 24 October 2013 - 12:33 PM.