Brenter Snowbike C4 - Do people really use these?

Not sure how big these are overseas, but I've never seen one on the east or west coast in the US.

While I am a big fan of alternative methods of snowsliding (I have an original release Burton snowskate that we tool around with in parking lots and post apres happy hour), I just don't see me (or most) wanting to get on these death sleds.

If you want to buy one, check them out here.