We already know what the next-generation Porsche 911 looks like. We know this because a production model was spotted without any camouflage a couple of weeks ago.

What we don’t know is just how fast the flagship versions will be, such as the 911 Turbo or Turbo S models. Rumor has it that the Turbo will send around 600 horsepower to its four wheels, whereas the ‘S’ should get a little more, although the exact number remains a mystery.

Off the line, the 2020 Porsche 911 Turbo should continue to be a force to be reckoned with. To expect a sub 3-second 0 to 100 km/h (62 mph) time is normal, especially since the current model is pretty much there already.

Here, we have footage of a prototype of the next-gen 911 Turbo (or Turbo S, we don’t know), albeit in Cabriolet form, which does make a difference but not a huge one. The 6-minute long video, courtesy of Automotive Mike, invites you to admire the prototype as it rockets around the Nurburgring, sounding properly loud and looking extremely planted.

However, by far the most interesting part occurs around the 5-minute mark when the Porsche encounters a McLaren 720S just as it’s about to floor it on the circuit’s long straight.

The McLaren’s driver then activates the turn signal to indicate that they’re about to move over to the right side of the track, although once they do and the 911 attempts to overtake, the 720S takes off too, for what appears to be the world’s first high-speed rolling start drag race between the all-new Turbo/Turbo S and the McLaren 720S.

How cool is that?