This is a good lesson for our track day drivers. Why not for rally drivers also.
Whatch at least twice. On second time look carefully about the use of throttle and brakes. The green scale on right lower corner of Rpm -meter is throttle position sensor, and red one is for brakes.
He is on the max throttle as soon as possible, no in-between positions, and the same while using brakes. No braking with the engine.
Then look his driving lines. How the whole width of the track should be used. In every single corner. Not just in one.
Also notice the gear change points. All the time up to the limiter before the next goes in. Why. Because max power is located near max revs....