Expanding its portfolio in the rapidly growing small car segment, Pontiac announced plans to bring the sporty, five-door hatchback G3 to U.S. showrooms early next year. When it arrives, the G3 will provide Pontiac with a total of four vehicles capable of more than 30 miles per gallon on the highway. Already successful in Canada (as the Pontiac G3 Wave) and Mexico (as a sedan model), the G3 offers an EPA estimated 27 mpg in the...