I agree with partial solutions and using what we have now while at the same time working on better solutions.

We have compact florescent light bulbs.   They use only 1/4th the wattage of regular light bulbs and last 10 times as long.   They have come way down in price ($15 to $3)   They used to be hard to find and only 1% of the market.   Today they are 25% of the market and growing. (maybe more- my date is 1 year old)

Someone asked about LED lighting for the house.   I have just added LED night lights to my product line of indoor and outdoor lighting for my company.   I think I am one of the first promoting these.   The nightlights last 100,000 hours (between 10 and 20 years) only use 1/4 of a watt, and cost only 20 cents a year to operate.   I am working on prototypes for LED outdoor post lights for the yard.   I am hoping to have these on the market this year.

These are simple things we can use right now.    To answer the question about why Detroit is making Hummers.    That is simple.   Because people are buying them.    Silly thing about business people.   They tend to make what people want to buy.    When more people want to buy hybrids, they will make more hybrids.    Lets critisize car companies for giving customer what they want.   The good news is that Hummer sales are way down this year.   I am surprized you had a 6 month wait.    In Michigan you can get one right away.    They will probably even throw in a free tank of gas.