The occupants didn't wear belts? That's just mental. I wouldn't want to wish death on anybody, but I have to say it's just stupid not to be wearing belts. Doesn't the Mk6 have 3-point belts on all seats anyway? There isn't really an excuse.
Having said that perhaps being dead in that situation isn't such a bad thing. Something that I think may not be so desirable is having belts/airbags or whatever protect you from medical death, but you just end up a cabbage.
A few weeks ago when I was enjoying the thrills of Alton Towers, on the walk back to the car, I saw a somewhat unorthodox use of the interior space in what I believe was a Mk4 Golf - driver and shotgun passenger, then I think 4 maybe 5 on the back seat, and a girl in the boot

I know modern cars are built to withstand certain impacts, but surely you aren't helping if you are stuffing yourselves inside like sardines?