This thing is nicknamed "The Green Hell." And has actually claimed lives. They strongly recommend allowing a trained Nurburgring driver to take you around in one of their cars. For obvious reasons, but I you can pay a price, and your allowed to go yourself.
take a look, they actuall printed out a page of saftey regs. :eek:
http://www.nurburgring.org.uk/safety-leaflet.pdf
Ironically, on thier site; they beg you not to time your laps. and yet, they offer the fastest laptimes recorded...