For every prius/ "green" vehicle sold in the world, there's another gas guzzling luxury car with an exorbitant engine displacement sold somewhere else in the world....

FWIW Toyota SUVs toward the higher end of the model hierarchy get just as low MPG as a hummer. I have no idea why hummers get all the flak from the general public for their "eco-footprint"; must be the stigmatized owners.