The car has a 3.0 liter twin screw blower courtesy of the Weistec Engineering Stage III supercharger package. The car also features the 'bulletproof' Weistec transmission upgrade. Last but not least do not forget the M156 6.2 liter AMG engine is built using Weistec components.
There are questions regarding the fuel used as well as the wheel/tire setup but 9 second performance from built motor Weistec supercharged M156 motors is nothing new. It's the benchmark.
P.S. Can we get a slip instead of grainy video please?