At this point I'm ready to call this one done. All the elements are in place and about as neatly as I care to make them given that I have no plans to use this thing for transportation.
Instructables.com which is now over. No bikini girls with oversized checks have shown up at my door yet but I think if I'd won I'd have heard by now. Oh well.
I guess I'll see if I can find a wheelchair user who wants to try this out and let them have it for a while. There's a Northern Colorado Maker Faire coming up in March in Longmont and I'll have it there.
UPDATE: Oh wait! voting is still open till the end of today it would seem. Hope springs eternal!