If you don't include the SUV cum pick-up truck hybrid EXT, Cadillac doesn't really make a true dirt hauler. Those who need the interior space of a 5-occupant SUV combined with the multi-use capability of a full-size pick-up truck but still desire the pampering and prestige of a luxury car need only to look over at the GMC lot at the new Sierra 1500 Denali. The regular Sierra 1500 is nearly identical to the Chevy Silverado 1500, except for its front end design and some trim.