Mercedes has one, Lexus has one, even BMW has one and up until this year Cadillac didn’t. A midsize SUV based on a car chassis. A popular flatform for people who want that SUV images with a car like ride and can trade off-roading ability for all season comfort. It’s the same platform that debuted in the 2003 Cadillac CTS and will be used in the new 2005 Cadillac STS. See Mercedes car parts.