Gixxerkart piloted by its builder, and the Viper by Sabine Schmidt of Nurburgring fame. Sabine got a Ford transit van which has 170hp and weighs more than a minivan around the ring in 10 minutes and just a few seconds. Jeremy Clarkson had a Jaguar and couldn't manage the same. This woman can drive!

http://www.youtube.com/watch?v=-rPpoK3A8aE