SÃO PAULO — General Motors on Monday formally unveiled the Chevrolet GPiX crossover coupe concept at the 2008 São Paulo Auto Show. Developed by GM's Brazilian design studio, the GPiX 'represents a potential new segment for GM' in South America, the company said.Early word on the GPiX — the name is meant to represent 'global image' — was revealed last week. GPiX is one of the centerpieces of GM's ambitious plan to remake its South American product portfolio over the next four years.The four-seat GPiX is a two-door with high ground clearance that borrows styling cues from the new Chevrolet Cruze. It features LED headlamps, 17-inch wheels and tires and a panoramic glass roof.The GPiX 'could result in the development of many models' for the South American market, according to Jaime Ardila, president of General Motors Brazil and Mercosur.Inside Line says: This one might fly in the Northern Hemisphere, too. — Paul Lienert, Correspondent