The getaway driver in a chaotic smash-and-grab heist last year at Plaza Frontenac has been sentenced to two years in federal prison.Mario Washington, 24, waited behind the wheel of a Dodge Journey on November 26 as eleven accomplices swarmed a Chanel boutique inside the mall's Saks Fifth Avenue store, authorities say.
The crew of thieves, who came to St. Louis from Chicago, bolted out of the door moments later with 30 handbags worth more than $100,000.…