04/07/2008 19:10. plans for its small vehicles, you'll know that there are three important cars in the pipeline. The first is the all-important Chevrolet Volt plug-in hybrid, the new global compact successor to the Cobalt, and a new subcompact global car to take the place of the Aveo.

All of these cars will share one thing in common – their engine family. General Motors has developed a new line of ultra-efficient small-displacement four-cylinder engines... // Automobile.com