Originally Posted by oldnslow2

But imagine a family outing in the minivan. On the way to the beach you get a flat. You pull over to a safe place and put on the spare. But a moment of distraction you forget to tighten all the lug bolts. You continue on your way but a few miles later you feel a shutter and then suddenly the wheel falls off.

Who's fault is it... the car manufacturer?

If you're not responsible enough to ensure your own safety, you should not remove the wheel. My wife is not so we have AAA and she'll call them to put on the spare.