Foot-Powered Laptop
mrd98 writes: "There is an article in the Register about a U.S. developer who has created a foot-powered device which can be used to charge laptop batteries. Apparently 5 minutes of brisk pumping will give you 20 minutes of battery life, it can also be used to power most other electrical devices with a rechargable battery."
To go along with your foot-powered laptop, you might want to check out the Freecharge windup generator due out for Motorola cellphones this quarter. It won a Time Product of the Year citation.
"It remains to be seen if the human brain is powerful enough to solve the problems it has created." Dr. Richard Wallace
Some interesting research into human-powered computer systems has been done at MIT Media Lab. Here are some links:
Before you know it we'll all be wired for sound, uh MPEG-3. Stph
You couldn't generate power for free from vehicles passing along a road - the energy would have to come from somewhere. Any system you come up with would cause increased drag, killing fuel efficiency. Remember that little ol' law of thermodynamics - you can't get something for nothing.