The 992-generation Porsche 911 is already on sale globally, but only in non-Turbo trim. The range-topping Turbo and Turbo S have yet to be launched, and it seems we have to wait until 2020 to have access to them. However, the folks over at Car and Driver managed to ride in a Turbo S and found out important bits of info on the rear-engined sports car. For starters, we know it will generate 641 horsepower, but will it be quicker than the old model? Let's find out.