Cadillac says that it is the first automotive brand to offer XM satellite radio on all its 2003 models. Cadillac will offer XM on the 2003 DeVille, Seville, CTS, and Escalade family of vehicles. In addition, Cadillac will include XM on the 2004 XLR luxury roadster and an all-new entry in the mid luxury utility segment, the Cadillac SRX.