What in the world is a zinger luge?http://www.skatebrake.com/zinger.html
Looks like a low speed contraption using a hand brake.
They have a slick looking brochure trying to get people to build luge parks. I'm not sure I get the "license rights for X-Games and professional luge racing events."
They are listed as a member of IGSA and yet these "luges" are illegal.
Well your best bet is to google it, or try to contact them directly.
Another website claims "As seen on X-Games and Gravity Games" Yeah... uhmmm... no this was never seen on the X-Games or Gravity Games.
And what are "hand cast P.U. wheels?"