Just for fun I got onto You Tube and viewed a number of videos on battery powered folding bikes. Man, they look like a lot of fun, especially for my old tired legs . Does anyone out there use one or perhaps have used one? The nice thing, from what I see, they can be used as a regular folding bike, then use the electric motor to either assist or replace pedal power for those times when you might want a bit of a breather. Of course the big question is -- are they worth it quality wise, or are they subject to failure after a year or so use?