The Cadillac Escalade EXT, a $53,000 chrome-trimmed luxury pickup with leather bucket seats, a seven-speaker stereo system with satellite radio and a global tracking system, is the vehicle most targeted by thieves, a study by the insurance industry found. It's the second year in a row that an Escalade has been at the top of the list, which was released Tuesday by the Insurance Institute for Highway Safety. The Escalade sport utility vehicle topped last year's list; this year, that SUV is third. The Nissan Maxima, a midsize sedan, is the second most likely to be stolen among newer vehicles....