It seems like it'd be an interesting challenge to do either a long trip or even coast to coast (or even one lap of the country) on 50cc scooters or bikes. Perhaps one of the most challenging parts would be to accurately route out only 50MPH or slower roads. Another challenge would be planning out top end and tire replacements along the way. Sure, I could do it on my K13 or DR, but those are both different kinds of adventures 

Maybe do it on the #k1300s first? ;)