Re: "pre-crash preventative occupant protection"
My Merc has something like that. Basically, if you manage to frighten the ECU by spirited driving, then windows and sunroof will slam closed, seats will quickly straighten up, and seatbelts will tighten electrically. I've triggered it off by hard acceleration on snow (4Matic, studded tires) followed slamming on the brakes and sliding (studs foiled by layers of snow). The tightening seatbelts was the primary result. It's supposedly very good at reducing injuies.
Biting the hand that feeds IT
