Tiny RTW Bike?

[EarthQuaker]

I'm considering what to ride for some serious hinterland adventure travel. I'm a schoolteacher, so I've got time, but no money. The cost of gas starts to be an issue with how far I can travel. Also, I am not philosophically someone who needs a large, complex, or new bike. My understanding is that in much of the world simpler, older bikes are going to be preferable for many reasons, including repairability and not looking like a space alien to the folks you meet in the two-thirds world.
Anyway, I'm curious about a bike I see in Mexico a lot. The Honda CB125 is a cute little standard single cylinder with a front disc brake. I never see them in the U.S.A. Does anyone know how hard it would be to bring one into California? I'm not above a litte DMV sleight of hand, either. Comparable machines that are available in the U.S.? Thanks for your wisdom!
-EarthQuaker