they basicly said that you still have Troubles to bring to power down on the track. even with 180kmh you have to be soft with the pedal when accelerating.
But to be hones track numbers of the m6 should be compared to the panamera Turbo S, or cls 63 amg...
they really liked the m6 as a GT car, with stunning Performance.
Down side of the Brakes, sometimes the Brakes felt a bit unsharp. What ever it means. Actually if you look Close a the brake Performance you realise that 100-0kmh in 34 meters is good,whilst 200-0 in 147 meters is to Long.
( i have to say i am very happy with the ceramic Brakes..)
This particular m6 had the akrapovic Performance M exhaust
So M6 + CP + akra Performance exhaust. They liked very mutch the sound