GM CEO Rick Wagoner will unveil the Cadillac Provoq Concept fuel-cell vehicle tomorrow during his keynote at the Consumer Electronics Show (CES) in Las Vegas. Pre-reveal speculation abounds that the Provoq will use the fuel-cell variant of the E-Flex system GM introduced in Shanghai (earlier post).
Unlike the Volt propulsion system, which is battery-dominant with a small combustion engine range extender, the E-Flex fuel-cell system shown in Shanghai was fuel-cell centric, and used a blended operating strategy to augment its range and power with a battery pack that is half the size of that in the first Volt.
The Provoq concept will then appear again at the North American International Auto Show the following week in Detroit. Also appearing in Detroit next week will be the Escalade Hybrid, based on the two-mode hybrid system.
The Escalade Hybrid begins production in mid-2008.