From the website:

Welcome to FUH2.com, home of the official Hummer H2 salute. So...why all the fuss? Well, it breaks down like this: The H2 is the ultimate poseur vehicle. It has the chassis of a Chevy Tahoe and a body that looks like the original Hummer; i.e. it's a Chevy Tahoe in disguise. The H2 is a gas guzzler. Because it has a gross vehicle weight rating over 8500 lbs, the US government does not require it to meet federal fuel efficiency regulations. Hummer isn't even required to publish its fuel economy (owners indicate that they get around 10 mpg for normal use). So while our brothers and sisters are off in the Middle East risking their lives to secure America's fossil fuel future, H2 drivers are pissing away our "spoils of victory" during each trip to the grocery store.
The H2 is a polluter. Based on G.M.'s optimistic claim that it gets13 mpg, an H2 will produce 3.4 metric tons of carbon emissions in a typical year, nearly double that of G.M.'s Chevrolet Malibu sedan. The H2 is a death machine. You'd better hope that you don't collide with an H2 in your economy car. You can kiss your ass goodbye thanks to the H2's massive weight and raised bumpers. Too bad you couldn't afford an urban assault vehicle of your own. Or could you...? The H2 is a tax loophole. Under the current tax laws, business owners can deduct nearly half the cost of their H2s. If you are in the highest tax bracket, that's a tax savings of nearly $10,000! The government rewards you more savings for buying an H2 than you'd get for buying an electric car.