One of the theories was that he didn't kill himself because the muzzle flash wasn't visible and he could have been killed elsewhere and used the auto-drive feature to pull up to the hotel. Brandon Herrera just posted a video on Youtube that addresses both and the answer is.... No muzzle flash visible with windows up or down (he did windows down because his windows are tinted and he wanted to ensure no argument about non tinted windows) and no, the car won't drive itself with a dead person behind the wheel.