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Concept Car of the Week: BMW Turbo (1972)

Built by Michelotti in Turin and unveiled at the 1972 Paris motor show, the BMW Turbo was built both as a symbol of the carmaker's strength after its troubles in the ‘60s and as a celebration of that summer's Olympic Games in Munich. This two-door coupe, based on a modified 2002 chassis with a mid-mounted engine, was born when BMW's design director Paul Bracq convinced the board to let him design a concept that would be part design exercise, part technology testbed. Safety had become an increasingly important consideration following a number of design summits in the early ‘70s, and Bracq used the Turbo to test out a number of safety solutions.

Porsche Cayenne S Diesel: The V8 diesel Cayenne arrives

Porsche has revealed the 2013 Cayenne S Diesel with a 4.2 litre V8 diesel offering 378bhp, 626lb/ft of torque and 0-62mph in 5.7 seconds. Back in April we reported that the Porsche Cayenne S Diesel was on its way with a V8 diesel engine to take on the BMW M50d and the upcoming offerings from Land Rover with a 2014 4.4 litre Range Rover Sport seeming a likely possibility. Now Porsche has caught up and revealed the Cayenne S diesel, which gets the 4.2 litre diesel V8 with a healthy 378bhp and a very useful 626lb/ft of torque, enough to scoot the Cayenne S Diesel to 62mph in 5.7 seconds – a bit slower than the M50d, but all that torque should make it feel at least as lively.

Roof leaks dampen Autorama

The Detroit Autorama was marred last weekend by a leaky roof that spilled salty, rusty water onto several custom cars. The leaks were caused by a combination of heavy precipitation--Detroit has had one of the snowiest winters in recent memory that gave way to an early March rainstorm--which pummeled an aging roof. Water fell to the show floor in six spots, temporarily damaging seven or eight cars.