In conjunction with the Detroit Auto Show introduction of the Chevrolet Volt concept, General Motors is also unveiling an entirely new vehicle architecture that they've dubbed "E-Flex".

In fact, the WSJ reports that it expects General Motors to announce a $500 million initiative designed to upgrade two Michigan assembly plants, a pair of powertrain facilities, and a stamping factory.

“We went into more of a theatrical press conference,” said Steve Harris, a retired Chrysler and General Motors Co. executive. The Detroit show reflects how the auto industry has ...