Moving sale！I bought 2 years ago, and it still keeps great! I live in Towle Way, Palo alto, and ride it to Stanford everyday, it's about 3 miles to the GSB Stanford, within around 15 minutes. The lead acid battery still very powerful， it can go at least three round trip to Stanford, namely 18-20 miles every charging, and you can use pedals when out of power. The speed can up to 17-20 mph.
During Sep.2012 and Feb.2013, I drived my Prius car to Stanford, and spent more than $50 for gas every month, and always a little bit hard to find a C permit parking slot at Stanford. Now almost cost nothing, and I can park anywhere.

Tyala Electric Bicycle.
Battery 36V; Motor 249; Range Runs 30 MPC;
Speed 20 MPH;Cruse Control Included; No Drivers License Required.
Horn, Light, and Charger. Wt limit 225 lb. Fun Ride.
$450 obo