We’ve previously brought you spy shots of a prototype for the new 2013 Cadillac ATS, as well as an official teaser, but here is our own exclusive spy video of the upcoming rear-wheel drive small sedan testing on the Nurburgring race track in Germany and on some of its surrounding roads.

Small cars and Cadillac haven't, historically, gone hand in hand.

However, the new video gives a good idea as to how the overall proportions and stance of the ATS will look when out on the roads, and from what we can tell Cadillac fans have nothing to worry about.

The ATS has been confirmed for launch in the summer of 2012 and when it arrives will go head-to-head with the BMW 3-Series, Lexus IS, and Mercedes-Benz C-Class.

In terms of styling, the prototype confirms Cadillac designers are sticking with the brand’s ‘Art and Science’ design language, with plenty of influences from the CTS evident. Under the hood should be a range of four-cylinder and V-6 engines, and hopefully a V-8 reserved for a high-performance ATS-V.

Click here to watch the spy video in full via our YouTube page.

While we wait for its arrival mid next year enjoy the latest spy video, and then click here for our more detailed report.