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.

Lamborghini LP570-4 Superleggera – UPDATED

The Lamborghini LP570-4 Superleggera on the floor at Geneva Updated: Updated with a full photo gallery and Lamborghini LP570-4 Superleggera Press Release. The Lamborghini LP570-4 Superleggera has been on its way for quite a while. We first speculated that Lamborghini were developing a Superleggera version of the LP560-4 back in September when we had spy pictures of a fettled LP560-4 out testing.

Nissan Esflow concept

Nissan will debut the Esflow concept at the forthcoming Geneva motor show. Billed as a sports EV, the concept aims to prove that sacrificing petrol does not equate to losing driving pleasure. The rear drive, two-seat car features traditional sports-car styling, while the cab back, long hood and high waistlined proportions arc back to the original Datsun Z cars.