A "bad error" in a minivan does this too. The "bad error" in the plane would be flying into a thunderstorm. I equate this gobsmackingly bad judgement with driving a minivan off of a cliff.
Bad weather can develop around you, and when flying you can't just pull over and wait for it to pass. A cliff doesn't suddenly develop in front of your minivan.
A relatively minor error can quickly develop into a situation well beyond your control, without any way out of it. That kind of fatal escalation is pretty much impossible with road vehicles.
