If anyone is familiar with the TV show
Top Gear then they may have heard of Sabine Schmitz. Have a look
here for a link to a video taking a BMW M5 around the circuit.
Incidently, at the weekend
Top Gear showed Sabine taking a Ford Transit around the circuit! This was the funniest thing I've ever seen - a van over taking motorbikes and sportscars!

She got round in just over 10 minutes 20 seconds (ish!).
Unfortunately I can't find a video of this footage!!

She had previously taken a Jaguar S-Type diesel around the circuit in a little over 9 minutes.