Cool - a step in the right direction for an electric commuter. The #1 downside is it's top speed. If you're cruising at 50mph on the highway - you're gonna get run over. They need to get the speed up a little. I see that with it's minimum range - I could easily get to work and back - nice!
The price is conspicuously missing. If it costs more then a few thousand - it would take a LONG time for it to pay for itself VS a typical motorcycle.
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Supposedly THIS one can do 70mph. Costs about $10k.
http://www.zeromotorcycles.com/zero-s.php
(look! no spokes! - heh heh)