I ride an eZee Torq to work and back (about 20 miles) which will double to 40 miles in the next couple of months. I can cruise about 22-25mph and get about 20-25 miles on a charge. I've heard other people get over 35 miles but they're probably riding the bike in restricted mode which is max 15.5mph (UK law).
$this->bbcode_second_pass_quote('ChicknLittle', 'T')his year I've moved to around 3 miles (but lots of big hills) from work... And I just ordered an electric bike (ok, im lazy) to get me to work faster and with less sweat... The bike is about 2000$ (there are cheaper available), with a 1000 Watt motor, and a great lithium polymer battery which only weighs 10 pounds and is not greatly affected by cold weather. I expect to be able to go around 14 mph even up hills with little effort, with a range of more than 15 miles without pedaling... and plan to use it even in cool weather this winter. Not cheap, but cheaper than trying to buy a hybrid car, and cheaper than feeding a horse.
This pic is close to what im getting (same frame and drive, different battery configuration). I think doing this will reduce my stress re: peak oil... and, a movie about a guy who uses an electric bike
http://www.youtube.com/watch?v=3eNdU9QQZUk