The Advanced Lightweight Coupe shows that design director Ian Callum has a clear vision of where he wants to take Jaguar. Yes, it's officially a concept, but this car will hit the road nearly intact as the next-generation 2007 XK8 and XKR coupe and convertible. As its name implies, the concept, like the XJ8 sedan, has a bonded and riveted aluminum skeleton supporting aluminum body panels, which should drop curb weight by several hundred pounds compared with the current car. This, plus higher-horsepower versions of the current cars' normally aspirated and supercharged V-8s, should put performance in Porsche 911 territory. The 2+2 cabin beautifully balances modernity and sumptuousness, with nary a trace of show-car frippery.