it may be possible, who knows. If someone asked you 5 years ago, if it is posible to do a backflip over a road, and land on a rail, what would you have said? how about a rodeo7 off a cliff. even as simple as skiing switch. a few years ago I couldn't fathom these things, and I bet you couldn't either. It may be possible, it may not. just because someone on the internet, who maybe even claims to be pro, says it isn't possible means diddly squat. If you wanna find out build the thing, and find someone with the balls, and skills to attempt it. untill it is built and attempted anything said in this thread is a waste of time.
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gottagetoutatheway