Hopefully not wanting to offend anyone, but I would imagine that a lot of bikers with disabilities would be interested if it looked more like a bike.
A few companies have tried this style of fully enclosed bike before but they always seem to flop.
I think because its too far away from a bike, but car drivers would not use one - never mind the cost.
Probably see them at Blackpool in a few years, as a fareground ride at the pleasure beach.
Other than the obvious ballancing trick, I bet it does not have much "fun factor" to ride.