Drive Smarter Hybrids, biodiesels, electric - today we have more choices than ever when it comes to efficient transportation. But, some simple changes in our existing driving habits can improve fuel efficiency by up to 25%. Tips include driving at (or near!) the speed limit, keeping your tires inflated, making sure oil and air filters are clean, and stepping on the gas / brakes carefully. Driving like a drag racer may be fun, but it has a substantial environmental cost!