Styles of e-bikes.
By installing a power system
on a standard bicycle, you get e-bikes with familiar styles:
mountain bike, cruiser bike, folding bike and adult trike:
. 
.
Manufacturers who build e-bikes from scratch often introduce new, stylish designs:
(Pictured: EV-Global E-Bike LE and Giant LaFree)
. 
Some designs push the envelope on how electric bikes should look and perform:
Betterbike, eGO (moped-like
electric vehicle), and the no-longer-available MotoBOB push-trailer.
.