If there were any doubts of the superb lap time of 7 minutes and 59 seconds acheived by the Cadillac CTS-V on the Nurburgring, here is all the proof you are going to need. General Motors has released a video showing the entire run with John Heinricy, Excutive of GM Performance Division and racing driver behind the wheel.

Although this particular prototype is supposed to be completely unmodified to lay claim to the fastest lap time in a production sedan, the engineers were forced to make a couple of minor modifications for safety reasons. A harness bar for a 6-way racing safety belt system and there was also a fire supression unit on board which are only going to add weight to the car and did nothing to enhance performance.