The fastest lap time set at the Nürburgring is 6:11:13, set by Stefan Bellof in 1983. It had 630HP and weighed 850kg.
However, we have lighter, faster cars now. Chassis and wheels are being made with carbon fiber, electronics are better and faster and smaller and lighter, 1200+ HP is possible in racing engines with perfectly tuned sequential fuel injection, and we have 30 additional years of technology, materials science and automobile engineering, and yet the 1983 record still stands and the Pagani Zonda R made headlines when it ran 6:47:5. Over 36 seconds slower, with 32 years of time lapse...
What is going on here? I understand that safety regulations and racing rules may prevent an in-race lap that beats the time, but of all laps, with all cars timed the record still stands.
Why hasn't this record been squashed, and why is it light-years ahead in lap times to everything else?