This is the new Cadillac CTS Coupe, a sleek two-door Caddy that will join the CTS line-up alongside the saloon and Sport Wagon estate when US sales start in spring 2010, and take on BMW's 3-series, Audi's A5 and Infiniti's G37 Coupe. This production Cadillac CTS Coupe looks very much like the concept car… It does indeed look like the concept, right down to the twin central exhausts and hidden