LOS ANGELES, CA – NOVEMBER 30: A natural gas home refueling appliance, Phill, by FuelMaker is connected to a Honda Civic NGV natural gas vehicle during a media day preview at the 100th annual Los Angeles Auto Show in the Los Angeles Convention Center November 30, 2006 in Los Angeles, California. The auto show opens to the public December 1. (Photo by David McNew/Getty Images)