This is by far the most bizarre and annoying bug I have run into especially as I was nearing the maxing of my character. My cars are all suddenly invulnerable to any damage and will not despawn... The weird thing is they display physical damage. So my Caliburn for example has no doors at all and is crumpled up like a piece of mangled paper and now for some reason isn't even drivable but yet I can't explode it and get a new one. (because invincible and won't despawn) Also I now cannot quickhack anything. The options just aren't there.