Curious choice at best. The Regal's a respectable car, but COTY material? It's just GM's take on the 2004 TSX. Take a European midsize sedan, rebadge it, and sell it as a "entry-level luxury sport sedan" in the North American market. That's all it is.
In my opinion, COTY for the year is between the Leaf, Volt, Fiesta, and Sonata. Anything else is crazy-talk.