Cadillac takes the 2013 ATS to Germany for proper testing on the rigorous Nürburgring.

Cadillac has released its own spy photos and video of a test run on the Nürburgring.

The video and photos give us another look inside the development of the compact 2013 ATS sedan, this time as it undergoes testing in Germany.

Cadillac will also be doing a series on its Facebook page on the ATS development.