Several announcements emanated from the events surrounding this year's Pebble Beach Concours, but Cadillac led the pack with the debut of their Elmiraj concept. The so-called 'Grand Coupe' is nearly as large as a Mercedes-Benz S-Class, but weighs around 4,000 pounds. With a twin-turbo V8 under the hood, it looks to talk as well it can walk. It probably won't make production, but look for design queues on future models. SHOULD THEY BUILD IT?