It's been a slow and steady build-up to the debut of the new Mercedes-Benz CLA
-Class. Previewed by the Concept Style Coupe in Shanghai last April, Mercedes has been teasing the production CLA for months. It will officially debut in Berlin next week, but before it does, Benz has showed its new compact four-door coupe to a select group in Detroit, and released photos and details along with it. Based on the new A-Class, the CLA is the third in a series of new front-drive models Mercedes has planned, and the first that American buyers will get.