With an LS9 supercharged V8 said to make 567 HP, we know that the Cadillac CTS-V is one swift sedan. But we had no idea just how fast it would be until it recently set a lap time of 7:59.32 on the Nurburgring Nordschleife. That time makes it the fastest production sedan ever officially recorded on the German benchmark race track. Now, just in case you thought GM was just pulling your leg, the General has released this video showing the world what's what. Click the jump to check it out.