You might have thought that anyone who's willing to go to the trouble of modifying his ride with questionable exterior modifications in the name of fuel efficiency would start with a small, efficient vehicle in the first place. Apparently, that's not always the case, as can be seen by the Toyota T100 pickup truck above.
Aerodynamics. When discussing overall efficiency, sometimes it's easy to overlook just how important the shape of an automobile is in determining how fuel efficient it is. Aerodynamics is the reason that the new Honda Insight looks so similar to the Toyota Prius and it's also the reason that the production version of the Chevy Volt <