Lot's of people, particularly polluting manufacturers and the politicians they buy off, say that a lot. "Don't worry about it. Advancing technology will save us." And then automobile manufacturers, for example, go right on making and and selling SUVs and other gas-guzzlers and complain that it would cost too much to try to procuce more fuel-efficient vehicles. No advancing technology from that quarter if they can help it.   

Sit back and wait for these things to happen? No, I think we should insist on it. It's called "consumer demand." Businesses are often responsive to that. especially if you make it plain that you won't buy their products unless they make something you want, you'll buy from someone who already does, or managed to make do with what you already have.

A tax on gas hogs sounds like a good idea to me. And how about a tax credit for buying a hybrid?

Don Firth