Didn't get a real close look at it, although I really should have in hindsight, but someone commuted in today on a Zero.
It really resembles a dirtbike - real trim, slim, very light
in appearance. Had all the controls, throttle, clutch, etc - although I'm not sure how you'd know when to shift on a bike that is driven by electric motor (indicator light?). Had a big square battery where the engine would normally be, shrouded in fairing and frame, the motor was buried at the bottom where the swingarm attaches.
One of the things that struck me most about it was how many cooling fins were on the bike. They were under the seat, on the motor, every surface that saw airflow. I guess to cool the motor and what looked like an amp or power converter.
http://www.zeromotorcycles.com/motorcycles/ in case you're wondering what I'm talking about. If I had the money and room in the stable I might even try one - looks perfect for commuting.