That's what I'm talking about! While this appears to have been made specifically to haul the dirt bike around, no reason it couldn't have a seat mounted on to it or a cargo box. Hell, if you really wanted to gild the lily, you could make a dump bed for it. I'm thinking of something a little more racy looking, however.
Something more along these lines. Make the platform like the "Taco Truck" in the top photos but add a bump-out on the front for a windscreen and lower the whole thing down a little. This photo showed up on the Otto Nero site also after I did a search for sidecar. There are several other interesting rigs that showed up as well. Definitely going to have to make one.
Started my CNC class this week. The instructor gave us a calendar with the assignments, quizzes, etc. on it. Looks like a bit of reading but I don't think the class will require a lot of tough study time outside of class. We'll be making three projects on the machines - looks like one of them may be an exhaust collar for a 900 Kawasaki! That's pretty cool. The only problem I see for me is the time factor. I'll be commuting back and forth to the college almost like a full time job for the next eight weeks. That's going to cut into my free time but I think it'll be worth it.