Not to rain on people's parade...but...that's not an entirely fair or true statement that it "beat" the Zonda F as fastest car around the 'Ring...because there are lots of other cars that are even faster than both.
Zonda F is still the fastest road legal production car on the 'Ring. While this souped up M3 is faster, it isn't a production model--it has been modified from the M3 CSL which is the real production model.
Besides...if you really mod the M3...the M3 GTR can do the 'Ring in 7:12.
And if you account for production non-road legal cars like the Radical SR8...it can do the 'Ring in 6:55.
Just saying...
http://en.wikipedia.org/wiki/Nordsch...test_lap_times