When a wheel's not tight, it'll rattle and vibrate alot before it leaves the vehicle.
But then, if the driver doesn't know any better... they had no idea what was happening while it was making noise and vibrations.
A few years ago I went to a tire store and had new custom wheels and tires put on my truck. On the way home (about 30 miles) the truck started shuddering and before I could get it stopped I lost a wheel. Apparently they either didn't get the lugs tight or over tightened them as I didn't have a lug stud left on that corner. I was lucky in that the tire and wheel stayed in the wheel well and all the damage was confined to the body in that area. No one got hurt.
I always guessed that the lugs had been put on too tight and the studs were stretched. Usually with loose lug nuts the will spin off and at least one or two studs would survive. That didn't happen in my case.
If you notice the shot in the video of the missing wheel there are no studs left on the hub. There's no telling how it happened without some expert analysis.