He really hit that turn at speed - hard to judge what went wrong from the few seconds of video, but man, what a crash.
The rest of it is physics at work ... those two guys are lucky they're ok, but if you really look at it, the car was allowed tp dispose of its energy over a long period of time on what was a relatively gentle and obstruction-free slope. Violent as it appeared, there were no sudden stops or blunt releases of energy.
Still .... jeeze
2000 Mercedes Benz E320 (daily driver)
2007 Infiniti M35x (wife's)
2006 330 cic ZHP 6sp (current)
2005 Z4 3.0 sp nav x-leather (retired)
2000 323i PP (best car, ever - retired)