Here is one I saw on Slashdot is this car that got over 3000 miles on a gallon of gas. This is the winner of the Super Milage Competion. Second place is better pretty awesome too.
For the lazy bikers we have one from Engadget a wheel that turns your bike into a moped. If only it was electric, but batteries would be heavier then fuel. With this even aka Steve could keep up with me.
