AutoWeek reports: Helping Hummer. Even if GM was to somehow, miraculously double a Hummer's fuel economy, it would still be shite. The H2, by GM's estimate, averages 14 mpg. So now we'd be talking 28. Party time!
Although we're pretty sure no one buys a Hummer H2 with fuel economy in mind. Glacier melting, sure. Fuel economy? No.