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Jaguar XF-R unveiled at Detroit auto show 2009

By Tim Pollard Motor Shows 10 January 2009 22:52 Jaguar's XFR is shown today at the Detroit auto show 2009 – and the XFR at a stroke becomes the fastest saloon the Midlands manufacturer has ever made for the roads. Jag has taken the XF saloon and fettled it with the new direct-injection 5.0-litre V8 petrol engine that supersedes the familiar 4.2, but breathed upon by a new supercharger to crank out a wholesome 503bhp.The R model is extremely rapid, thanks to a classic Ayers Rock torque curve that peaks at 461lb ft from just 2000rpm and doesn't go away until 5000rpm. There's brawn wherever you need it, and the XFR scuttles to 60mph in a scant 4.7sec.

Bentley Bio-Fuel beckons

Bentley finds itself in this ludicrous position. Of course, the current credit problems play a big part in Bentley’s problems, either because buyers need finance to buy their cars or, more likely, the demonising of the sort of cars Bentley makes by the eco-mentalists makes them an uncomfortable buy. So Bentley has come up with a strategy to combat the ‘Planet Killing’ perception many have of its products – Bio-Fuels.

Race-ready Dodge Viper SRT10 ACR-X revealed

The Dodge Viper special editions continue, and on Thursday a turnkey race car, called the Viper SRT10 ACR-X, broke cover. It's not street-legal and is upgraded with a slew of performance modifications aimed at racing enthusiasts. Power grows by 40 hp, to 640 hp, for the 8.4-liter V10.