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Mazda brings diesel back to Indy with 6 Skyactiv-D

Diesel has enjoyed great success lately as a racing fuel, but there's one place it hasn't appeared for more than six decades: Indianapolis Motor Speedway. Mazda's breaking that dry spell this weekend, when its Mazda 6 Skyactiv-D race car will head to Indy for the Grand-Am race. We like the 6 in both road trim and racing livery, but that previous diesel-powered racer -- the Cummins Diesel Special -- is pretty neat too.

Inside MP4-12C's new McLaren Production Centre

McLaren today opened the doors to its new McLaren Production Centre which will build the MP4-12C and all future supercars from Ron Dennis's fledgling sports car brand. British prime minister David Cameron attended the event, hailing the economic benefits of manufacturing. He said the UK car industry was helping reshape the national economy from a service-based one enriching the minority to one which actually made things again - to the benefit of a wider slice of society.

Frankfurt motor show 2013: CAR’s A-Z guide

The 65th Frankfurt motor show kicks off on 10 September 2013. The event features 1000 exhibitors and is set to attract around 1 million visitors during its fortnight in the spotlight. This is CAR Online’s handy A-Z guide to the 2013 Frankfurt show, rounding up all the important new cars expected at the event, with links to our complete coverage on every vehicle that matters.