The all-new Chevrolet Spark, making its world premiere at Geneva, is a small car designed to make a big statement. It's big on style, big on fuel economy and, like all products carrying the gold bowtie, big on value. Distinctive, edgy styling conveys energy and spirit because this is a mini-car that's as fun to drive as it is economical to own. With punchy 1.0 and 1.2-liter four-cylinder gasoline engines and a five-door hatchback body format...