As far as the stuck gear, I've seen posts where the cars were parked in gear and stuck there. Evedently the selector rods get hung.
There will always be stories of how this or that happened and thank god I wasn't wearing my seat belt or a helmet on my motorcycle. I've heard lots of these over the years.
I also know the difference between a hot rod and a timebomb. The biggest saftey factor is the person behind the wheel, assuming you never make a mistake or that someone is "just a moron".
There are people that will wire the guard back on their saw no matter who tells them it's a bad idea. Some of them no doubt feel that if you need it your an idiot.
I'm done pi**ing now, I appreciate the "open mindedness".