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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.

Only bikers avoid commute stress, says study

MOTORCYCLES, scooters and mopeds are among the modes of transport least likely to affect your general wellbeing, according to a government travel survey. The Office for National Statistics released a report earlier this year examining the impact of commuting patterns on people’s levels of anxiety, happiness and satisfaction. For journeys up to 30 minutes there was no negative effect on levels of happiness or anxiety for those who rode a motorcycle, moped or scooter to work.

Nissan wins New York taxi bid

Nissan won the fight for an exclusive 10-year contract to design and supply the next generation of taxis for New York City, starting in 2013. "The new taxis will be custom-designed to meet the specific demands of carrying 600,000 passengers a day in New York City traffic," Mayor Michael Bloomberg said Tuesday. "The vehicle meets the top priorities identified by the public in our online survey." Nissan was battling Ford Motor Co.