04/09/2012 at 12:23 pm  Come on Dan. The Frog bike is plugged
in, which implies electric. The bulge from where the frame meets
the rear wheel looks like it could house some form of electric
motor that would drive the rear wheel. It's ok to infer, we'll
allow it :)  04/26/2012 at 10:30 pm  The hole in the center is
there to highlight the absence of the gas engine that would be
there in a traditional motorcycle. There is no true benefit,
however there is no benefit to filling the space either. The
lower chassis contains the batteries, the upper is pretty
important if you want somewhere to sit and put the gauges and
steering controls, and the engine is located inside the rear
wheel. The negative space in the center is simply an attractive
design statement that takes advantage of an interesting design
coincidence. (Did you not bother to read the article you linked
to Dan?)  Log in or register to post comments