I do believe there is a market for this device that is being overlooked. There are millions of Americans who use wheel chairs to get around, not because they can't stand, but because wheelchairs are the only alternative to walking for distance.
I have difficulty walking long distances. I stick it out, but it would be a big help for me to have one of these devices. Right now people are paying thousands for exotic wheel-chairs. Many of them could use a Segway. I think Kayman priced himself out of their range.
This technology facinates me. I'm hoping he can make a go of it, because it is an interesting device, which may suffer from having been marketed incorrectly, more than anything else.