The American hummer is an endangered specie. ++ 9000 of these "gas guzzlers" were sold this year against 71 000 in 2006. ++ Even the Chinese Communist Party is suspected to have rebuffed GM's offer to buy the sinking brand because of its polluting reputation. ++ Americans seem to drive a little less and use public transportation more. ++ "Still, the Hummer's tale is a vivid example of the power of gas prices to change Americans' ways," and prove that appropriate incentives can lead to a real change towards a greener future.