There is a nice guy riding a custom-built trike around the world (he's not setting any speed records: that's
not the point). Check him out at his most excellent Trike Trek page.
There's a company building a people-powered line called Rhoades
Car. I think theirs are more for getting around Boca Raton than commuting, but never say never. The Cadillac
of people-powered vehicles.
Recumbents seem to have the energy advantage. Like exercising in an easy chair, only… not so easy. Check out
S & B Tandem.
The baddest recumbent I have run across is the Windcheetah. This
is a very speedy piece of work. I think there's a pun in "wind cheater", as in beating wind resistance,
but that's just my read on it, and not the official line. Alert reader Jeff DelPapa wrote to point out that my
reference to this as a welded frame was wrong... Loctite (a chemical company which makes adheisives, threadlockers,
etc.) is a sponsor. The frame is "bonded" together.
The Smithsonian has a great web offering in its bicycle special. This series is awesome, from the biggest tricycle
ever (24 feet long…) to some speed record bullet bikes. Check out the Smithsonian
bicycle special from September of 1996.
Some physics students in the northwest have built a trike propelled by fire extinguishers. This Rocket
Trike is "people powered" in a perverse sense only, but jeez, how could I pass it up? I am a physics
teacher, you see.
Here's a combination electric/people powered car. I'm just not sure whether an Omni
Hybrid EV has ever been built, but it looks good on the web.
Another excellent page: The people at Special Purpose Vehicles are doing some fun stuff. It's the Special
Purpose Vehicles home page. They make trikes, recumbents, hand-cycles, etc.