Retrofitting an existing lifting technology is what I'm thinking of. But, fella's, and with respect to Bill, I think my analogy holds. I Am one of those guys who have built bikes from scratch, two of them. And a couple of street rods. Frame up kinds of stuff. And I carefully study the mechanical ramifications of what I'm doing. And I ask lots of questions from people who know more than me. Perhaps my query was not strait forward enough. I've seen custom bikes on the net and in magazines that would never pass standards for braking, turning or highway speed driving. But there are plenty of people here who slobber all over them. It seems to me that a simple lift mechanism, applied from some other field to rise twenty feet in the air, would be much safer to contemplate than a machine whose collision force potentially reaches a maximum impact of 120 mph.