I saw this in an ad at Daily Kos, and by golly if it doesn't seem like a good old capitalist idea for those of us who can't really drive hybrid vehicles (I love my Ford F-150):

Each year, the average car emits about 10,000 lbs (three times its weight!) in carbon dioxide pollution – a leading cause of global warming.	You buy a TerraPass.	TerraPass funds clean energy projects that reduce industrial carbon dioxide emissions.	Your TerraPass is third-party certified to reduce the equivalent of your car's carbon dioxide pollution.

(HTML from this page reformatted as a table because, without a 750px wide graphic to set the page width, it flowed really wonky-like)

This is why I don't give up hope altogether in the face of massive administration incompetence - thanks to clever ideas and better technology, it's now possible for people whose cars pollute to buy Kyoto-style pollution credits and let the CO₂ come out of the atmosphere somewhere else.

It's not perfect, but it's a start, and they even offer a full refund if you're dissatisfied. I think this is going on my Q2 donation list.