The Cadillac Converj is still just a concept. Even though I'm far from the only motor journalist to have gushed over the star of the North American International Auto Show, General Motors' brass hasn't given a production version the green light. To refresh your memory, the Converj is a sexy 2+2 coupe riding on a version of the Chevrolet Volt's Voltec platform, powered by a 16 kW set of lithium-ion batteries with a 1.4-liter four-cylinder engine for...
