Spied: Cadillac XTS spotted testing

The Cadillac XTS is nothing new. We had our first look at the concept in 2009. Since then, we've seen it on auto show floors from Detroit to Beijing.

Today, Autoweek employee Michael Weiszbrod snapped these photos of three big Cadillacs from the passenger seat of the righteous SLP GMC Sierra. It might not have the parentage of its soon-to-be competitors from Audi, BMW or Mercedes-Benz but, brother, does the new Caddy have presence.

By Rory Carroll