As nice as teh car is, I'm tired of the "we're in marketing, so we really don't care about definitions anymore" mentality that has removed all meaning from the word Coupe.
it's a sedan. it's a nice sedan. it's an attractive sedan. I'ts most likely a fast seddan. it's all those things. What it ins't, is a coupe.. Neither is the CLS. Or the RX8 (though it's closest).
What's next? The cloth top 6er is a pickup? The Z4M is a station wagon?
Definitions for these things already exist and already work. Definitions are necessary for communication. it'd be nice to know that when I aked for a banana you brought me a long yellow tropical fruit and not a large gray animal with a trunk, simply because your definition is different than mine.