How is Bugatti Filmed When Driving At 400 km / h?

The 2017 Bugatti Chiron reached 400 km / h in 41.96 seconds and a video was released showing the supercar developing incredible speed.

Shortly after the video was released, information emerged that the video was recorded by another Bugatti Chiron car driving in and around it, and behind the wheel was the famous Formula 1 driver Juan Pablo Montoya.

See the answer to this puzzle in the video.