7. Cars

The cars we drive to and from our home's consume a lot of energy, mostly oil. There are some good and realistic ways to reduce oil consumption in this category. My wife's car is a 4-door hybrid (40+ miles per gallon). I drive a turbo-diesel station wagon and use bio-diesel (40+ miles per gallon). Both cars do very well on the highway. Both have been available for years, and both have been very reliable and fun to drive. No need to wait for hydrogen cars, we can use less oil by selecting more energy efficient cars and such cars are on the market today.