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Soon, the Mercedes CLS won’t be the only so-called four-door coupe on the market. Porsche is working on the Panamera, and Volkswagen and Audi are developing sleek four-door models which will carry the "coupe" designation.
Not much is known about BMW's entry into this unique and exclusive market, but we have heard that BMW has given up on the idea of rear-hinged doors and will instead design this luxury automobile with conventional doors. —Brenda Priddy