Review: 2009 Chevrolet Silverado Hybrid The cowboy Cadillac with a green streak. Little of the Silverado's
propulsive juggling act is apparent. When the engine shuts down at a traffic light, only the soft whir of the battery's cooling fan lingers. There's a gentle shake when the engine stirs to life, and electrical whine is occasionally detectable, but otherwise this is the futuristic ...