Motor Trend posted a video of a Dodge Viper ACR ripping around the Nurburgring in an amazing 7:22.1. That pretty much makes it faster than everything on the road. Now of course, the ACR is basically a road legal race car so the time can be taken with a grain of salt. Either way it is seriously fast. So far there has been no word on whether the time has been confirmed as official.
Here is the video.