After looking at the KTM Freeride 350, gas gas TX Randonnč 125, http://www.projectm85.com/prototype.html
ultralight freeride motorcycle, the FX bikes, and thinking about rebuilding a trail 90 class of bike to play in the woods with, I like the 125lb, 125cc, 125mpg design target!
I had a Kawasaki BN125 street bike, with hopes of 100mpg, 55mph camp touring, but the bike never reached 100mpg, and did not maintain 55mph into wind or hills.
So I settled on 250 class, and have been pretty happy except when I've dropped the bikes in tough spots.
I think the FX bikes (I guess the generic description is Ultralight Freeride Motorcycle) could open a new market and typical motorcycle manufacturers will want to get in on it too.
Anyway I am on the wait list for FX bikes!