This is a pretty cool idea. An electric motorcycle capable of 50 mile round trips and a top speed of about 50 miles per hour. It is called the Enertia Bike. It is about perfect for a non-highway commute. Read an MSN article about it that has some pretty cool photos.
Brammo is the same company bring the very cool Ariel Atom to the US. That is another very cool vehicle I am looking at.
The price point on both seems a bit high, but maybe in the next year or two they will get more reasonable. Or there is always the lotto.