I just want to note that this also happens on motorcycles. On a cold winter day my bike dumped me off as I lost traction at a stop light. It started to fall over, bumped its saddle bags, and before the tilt sensor could stall the engine it righted itself in second gear and idled its way through the intersection... with me literally running after it. It hit a curb and eventually stalled upright.
Second most embarassing thing the bike ever did to me.
Oh that was at a stop light shortly after it started raining in a Texas winter. I'm fully layered and geared up with leathers and full rain suit - I can walk a bit like a robot and look 150 pounds heavier. So I pull up to the light and just before I fully stop, my Dyna just ... slides out from under me. It's rush hour, a busy intersection, and my bike just sorta falls over in place while I'm sitting on it. Nothing you can do can stop it once it slowly starts properly tipping over, so it plonks onto the roll bars and bags (which are wide and leather, thank god). I scramble to haul it back upright on this oil slicked crowned lane, hop back on, and act like nothing at all happened.