50% of a car's energy is used pushing it through the air.
- aerodynamic - designed to slice through the wind rather than push ackwardly against it
- lightweight - Honda Fit weighs less than 2540 lbs compared to a Ford Expedition at 5515 lbs. Think about it, if there's only 1 person in the car . . .
- engine tuning - add a good air filter to let the engine breathe
- cruise control - keep it at 65-70 mph on the highway, and never, ever brake