I would describe the A2B as an electric moped disguised as an electric bicycle.Mopeds (motor--pedal, get it?) are scooters with pedals. In most, a gasoline engine provides the power. The engine is limited to something less than one horsepower, which allows you to ride one without a license in most states. The pedals are a necessary evil to help you get up hills and to get rolling. There is no way you would want to try to pedal one home if you ran out of gas. The same is true for the A2B unless home is at the bottom of the hill you're on.
You can see the A2B compared to the electric bike I built here:
Biodiversivist: A2B verses A123