looks like a gilera frame
they look cool, i suppose they could fold if hit by a car
they made an electric folding bike
http://motocrossactionmag.com/mobile/News/WEIRD-STUFF-YAMAHAS-BIGGEST-SELLING-MODEL--5595.aspx
I'd just tidy it up as much as possible, sticking to the standard theme.
so long as there's a few shiny bits of paint/chrome in there for the new owner to justify buying it, then you'll get the best bang per buck