I'm looking at the pics below from failblog. It implies that it's from a burnout, but that's obviously not the case. It can't be a really hot road as the top of the tire would probably be less melted ...
300 horsepower is a nice round number, but no where near as nice as the 382 that can be had with the Kenne Bell Lincoln Navigator massage. Bell adds a blower, larger injectors, engine calibration ...
The Tire Melting RWB Porsche Clip Taking Over Car Culture ...