Fuel efficiency stories

 
Birds have been doing this whole flying thing long before airplanes got in the game, but for some reason, it seems like the U.S. Air Force has been slow to pick up on what geese (and other birds) have been showing us for decades: flying in a formation that "surfs" on vortices can save substantial amounts of energy. Now, the USAF will check it out with a new project called $AVE.
 
It's not fast and it's not comfortable, but Canada's Alerion supermileage car trounced the competition at the Shell Eco-marathon, turning in a mind-bending fuel efficiency of 2,500 miles per gallon. That's about ten gallons to drive all the way around the planet at the equator, or about 90 gallons to get from here to the moon.