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Lotus Evora Cup (2010): first official pictures

This is the Lotus Evora Cup, unveiled at the Autosport International show today. With a 4.0-litre engine, an aero kit created by Italian specialists Dallara, and the road car's sweet chassis, the Evora Cup should turn a special sports car into an outstanding racer. Underneath the evocative Epsom Green paint and Solar Yellow stripe, the Cup is still fundamentally the same as a road-going Evora – this isn’t a silhouette racer.

Concept Car of the Week: Cadillac Voyage (1988)

Once a symbol of America's most luxurious automobiles, Cadillac's image had begun to wane by the mid-1980s, and not even the Pininfarina-designed and built two-seater Allante was enough to excavate the brand's long gone leadership. In an effort to take Cadillac onto the global stage, engineers and the team of designers led by Chuck Jordan began working on the Voyage concept, a rolling laboratory with visionary styling and innovative technology. It was unveiled in 1988 at a technological exhibition in New York thus highlighting that rather than a stylist's dream come true, it was a very serious study towards aerodynamic, performance, handling, comfort and efficiency in an age when automated superhighways would allow fast, safe inter-State travel.

The thinking man’s M3: Alpina D3 Bi-Turbo is world’s fastest diesel production car

German tuning firm Alpina has been tweaking BMWs since it started back in 1965 – in fact, it helped BMW develop the legendary 3.0 CSL, so it seems it knows its onions. However, its latest effort is something a little different. Not quite a conventional performance car, the 2013 Alpina D3 Bi-Turbo is actually the world’s fastest diesel production car, according to the firm.