[fidalgoman]

This is a bit of a Soapbox Rant: The huge problem is with the fuel lusted after by our modern age as much as the dealers who sell it. A long time ago when cars and trucks were rare, it was not so much of an issue. Today however we've gone way past the safe level of production and usage. The difficulty is the entrenched infrastructure that chains us to the gas pump.

IMHO, bout the only safe, non polluting, sustainable fuel source is solar electric. Alternative fuels may lessen the shortfall of oil but doesn't eliminate the problem. Then pollution reduction depends on how all the parts of your car were mined and produced. Be aware that your tires, half your car, the clothes you wear and your household goods and the energy to produce them come from oil wells. We have a vast infrastructure dependent on oil.

Soon with China's and India's emerging economy oil will be un-affordable for most of us. I do agree learning to conserve petroleum products is a good and necessary intermediate step. Again IMHO safe, lightweight, Solar Charged and streamlined cars are the only visible hope for the future. And the technology to build them needs to be simple, safe and economic as well. Until then 100+ MPG is a very real goal to reach for.