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Concept Car of the Week: Buick Wildcat (1985)

Before the Specialty Equipment Manufacturers Association (SEMA) show in Las Vegas became the capital of obnoxious extravagance, car manufacturers and suppliers saw it as an opportunity to exhibit their latest innovations, giving the public an exciting insight into the future of automobiles. This is when, in 1985, Buick unveiled the totally unexpected Wildcat concept, which broke radically with the brand's stodgy image. Proportionally, the weight is placed forward, with a thin and low tail.

Concept Car of the Week: Opel CD (1969)

Despite its sophisticated suspension and spacious interior, Opel struggled to sell its big Diplomat luxury sedan. It was 1968 and Opel simply couldn't compete with Mercedes-Benz, the leader in that segment by far. Bob Lutz, then a young executive at GM Europe, thought of using the sedan's chassis to create a large GT Coupe in an attempt to boost both its sales and profile.

Watch: 2014 Ram 1500 EcoDiesel video walkaround

Mike Cairns, chief engineer for Ram, says that people just can't help but pester him with the same damned question: “Why don't you put a diesel engine in a 1500?” Thanksgivings were, we imagine, brutal. The coming 2014 Ram 1500 EcoDiesel ought to steer family dinners back to less abrasive topics, like partisan politics. Get an up-close look at the truck in this video walkaround hosted by none other than Cairns himself.