This is the Dobberkau Porsche 911 GT3 RS. It is today's greatest Porsche 911 racecar and it doesn't even drive on racetracks. That's because it's a rally car.
When any sane person in the world would take a 997 GT3 RS and run a couple of trackdays a year, two Germans are crazy enough to take a 997 GT2 RS and enter it in stage rally, where there are trees and ditches and rocks and jumps.
That alone would make it the greatest 911 racecar competing today, but then I don't think there's a more sideways Porsche anywhere else in the world.
The World's Greatest Porsche 911 Racecar Doesn't Drive On Racetracks