http://cgi.ebay.com/ebaymotors/HONDA-US-90-THREE-WHEELER-/111176894810?ViewItem=&item=111176894810&forcev4exp=true#ht_472wt_1186
This is the earliest Honda I've seen. Sounds like it's in decent shape overall. I've never seen tires/rims like these before.

 

Those are the original tires they first put on the ATC. There was a James Bond movie, I think, Diamonds are Forever where 007 rode one of the original ATCs out in the desert.

 

I figured those were original tires, they must not have put much thought into whether it needed traction more than flotation LOL. I seen an early one of these in a Doctor Who story shot in late 1971, what's funny is the story was supposed to be taking place in the 22nd century yet they had these to ride on (they did give them a sound like they were being run on something other than gas though) but it looks rather odd today watching it and knowing what it is and just when it's from. If this wasn't over in MO, I'd give serious thought to buying it, even though it would be awful small for me.

 

I would buy that machine if it weren't so far away. I remember seeing the scene where Sean Connery was riding the ATC, then ditched it into a fence. Nice piece