Today's second panel -- Carl's, on "conservation and the environment" -- opened with remarks from Houston Mayor Bill White. Despite my earlier comments about the road-crazy Bayou City, Mayor White laid out some items from what appears to be a truly progressive energy agenda for Houston, including making it an international leader in green buildings.

Some of his more interesting comments came when White told the story of being one of the staffers that helped write the Energy Policy & Conservation Act of 1975, the original fuel economy law. He spoke of the doubling in fuel economy occasioned by the law, but then -- in a story I'd never heard -- spoke of trying to incorporate pickups and the forebears of today's gas-guzzling SUVs into the law. Unfortunately, this provision was "hijacked," as he put it, and became an exemption for so-called "work trucks," even when they did nothing more than ferry suburban hausfraus around. Thankfully last year's energy bill finally closed this disastrous SUV loophole.

White noted that he himself drives a car that gets 49 miles per gallon and while he's happy about the big boost in CAFE, we "can do, shoulda done, and will do better." He agreed that doubling our current fuel economy is "not a stretch" and could be done with technology that exists today. I was pleasantly surprised to hear that he's switched over the vast majority of the city's fleet of passenger vehicles and public buses to hybrids and is now looking to the other vehicles like garbage trucks.