Well I know where I'm not buying a toboggan from.
Link to video in question:
The video is definitely worth checking out as well, to get a sense of what it would look like in real life. The video alternates between first person point of view from one of the passenger seats and third person point of view looking at the coaster from the outside, as well as some panning shots.
The video is accompanied by Oxygène by Jean Michel Jarre. And I think it's a suitable song for such a ride. Listening to that music while watching the video, they feel like they go together nicely.
Also, is the short amount of time with hypoxia really enough to kill someone? Or is it just an unconsciousness coaster?