This is a fairly accurate 1/10 scale model of Honda's early 1980s folding scooter, the Motocompo. There's already plastic model kit versions out there, and a papercraft version (which I've built), but they tend to accomplish the folding by having you take parts off, then put them back in the "folded" position. Good excuse to play with designing things that print with built-in joints!
The papercraft version can be found here http://www.ne.jp/asahi/paper-m/yasu/2art_motor-c/e_motoco.htm , you may notice it inspired my seat folding mechanism.
Print one of everything except the "compopin" (you'll need 2 for the seat and 2 for the engine/pegs) and the files after it.
If you want to print one with "xtra detail', print an extra compopin and then substitute compo1xd and the files after it (compohlight, compotlight, compostrips, compoflap) for compo1. You should be able to print everything raftless, the peg that connects the forks to the bars has built-in support that should just snap off. compo1xd also has built-in support in the taillight cavity.The bars, cover, seat, pegs and swingarm have built-in joints, you may want to carefully separate the first layers with a razor before trying to fold them.
It's easier to attach wheels and pins to parts before plugging them into the body.
Have the seat and cover files been missing this whole time? sorry!