Found this site, which has a live link to a webcam at the 'Ring. The webcam covers the entrance to the circuit, and there is a LOT of nice cars waiting in line most days. Currently looking at a GT3 RS, amongst other things. Webcam is updated every minute or so. Best car so far: Carrera GT (black).
http://www.nuerburgring.de/fileadmin/webcam/webcam.jpg
http://www.nuerburgring.de/fileadmin/webcam/webcam.jpg