For years, automakers have cited studies contending that thousands of people die annually because fuel economy regulations force the companies to make cars that are not heavy enough. Larger vehicles, the argument goes, may guzzle more gas but they offer more protection, whether one hits a tree or another car. The argument has been a central one when efforts emerge in Congress to raise fuel economy standards. And it is taken seriously by the Bush …showed first 75 words of 1773 total…

…showed last 75 words of 1773 total…close to the deliberations said. Environmental groups say such a system will nullify fuel economy gains. The administration, however, is considering bringing Hummers and Land Cruisers into the regulatory system and effectively creating a heavyweight class like one suggested in the National Academy's report, with a somewhat demanding mileage target to stem further auto obesity. "My intention is to seek wide public comment on this topic to the point of public meetings," Dr. Runge said.