This design is intriguing because of the motor/chain drive and the battery space. It also folds.
If I lived near the seller, I would buy it.
http://www.ebay.com/itm/251785956575?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
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Cute toy, dandy for Grandma to ride around the corner to the Pharmacy for her Meds.
Maybe for a chick on a college campus to get around, college babes look good on anything ;-}
I just find it a really big waste of potential performance to not use bike hub gears on a motor with a right side clockwise output.
I mean come on, it's a bicycle, it is already designed to help our legs get us going to speed and not wear us out with gears so we can ride in the 'sweet spot' of effort we can do.
An electric motor and battery are no different.
They both have a 'sweet spot' too.
I haven't done a hub motor or a direct drive electric but I've done several electric 2 and 3 wheelers and they are all shifters.
Some are simple...
Some a bit more complex...
And some with just outrageously cool performance...
The big investment is in the battery, then a controller to handle the max battery power, and finally a motor that take what the max power the controller can give it.
Unless you are going into the $1,000 battery range (Lance Armstrongs Doping) like those last 2 examples you don't have a lot of sustained power to work with, much like your un-doped legs can do before they get tired.
Gears let you keeping your 'electric legs' in their sweet spot and why I don't direct drive electrics.