USA: PHOTOS: 8 Green Cars to Watch at the Detroit Auto Show. When General Motors Chairman and CEO Ed Whitacre asked his company, “Do we sell any cars through the auto show,” nobody had an answer, he told reporters recently. … The annual event, which kicks off on Monday with two days of press previews, will include an array of concepts for greener cars , including hybrids , plug-in hybrids and battery electric vehicles — a sign of how even in a time when more and more car …