Cadillac Provoq Concept Shown At Detroit Auto Show

[singlepic=370,440,330] Today at the 2008 Detroit Auto Show, GM unveiled its luxurious, environmentally-friendly, crossover concept, the Cadillac Provoq Concept. The Cadillac Provoq fuel cell concept is the latest example of GM's groundbreaking E-Flex propulsion system combining the new fifth-generation fuel…