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Audi sticks with Michelin – which is good for Michelin road tyres

Audi choose Michelin for 2012 races Audi are to stay with tyre maker Michelin and this year’s Le Mans 24hr cars will be shod with Michelin tyres. Have you ever wondered why car race teams choose one tyre maker over another? Well, in F1 it’s because they don’t have a choice, but elsewhere it’s different – they can choose.

The first SRT Viper is sold, we spot an exotic XTS, and the 2013 SVT Raptor offers more off-road fun, this week's Autoweek in review

The first SRT Viper crossed the block at Barrett Jackson in Orange County this past week, for a cool $300,000. All the proceeds will go to the Austin Hatcher Foundation, a charity to help families and children affected by pediatric cancer. While the Cadillac XTS hasn't been a stranger on public roads around Michigan, this heavily camouflaged example is a bit of a mystery.

Video: Hennessey Venom GT now unofficial fastest production car

The Hennessey Venom GT hit its top speed of 270.49 mph last week at the Kennedy Space Center, edging out the Bugatti Veyron Super Sport's previous 269.86 mph record. Hennessey and Bugatti have been battling for the top spot of "fastest production car in the world," and this time America came out on top. Hennessey attempted a record run in 2013, reaching a top speed of 265.7 mph before running out of room on the 2.9-mile-long runway at the Naval Air Station in California.