On paper, the Porsche 911 GT2 RS is an incredibly fast car. It has over 700 horsepower and an electronically limited top speed of 211 mph. Apparently it can go faster, to a claimed speed of 221 mph. German car magazine Sport Auto appears to have had a chance to see just how fast it can go, and they did so on an unrestricted section of Autobahn.

In the video above, the Sport Auto folks keep the camera trained on the instrument panel for the entire run. The run must've gone well, since the car appears to accelerate smoothly the whole time. And as for how fast they went, the car's speedometer indicated 356 kilometers per hour when the driver finally backed off. That's about 221 mph, which also indicates this car must have had the limiter switched off.

There is a discrepancy in speed, though. While the speedometer read about 221 mph, the GPS device attached to the car saw something different. It says the car hit 342 kilometers per hour, which is about 212.5 mph. Regardless of which instrument you believe, driving that fast on a public road is impressive, and both numbers confirm the car is capable of at least its limited top speed if not more.

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