Interesting driving!
Who noticed the brake lock-up coming down the hill? (Insert eek smiley) It appeared to be ABS, so perhaps it was HDC working, but a Rover, or an Inter would have eaten that hill without the need for any braking.
Perhaps the drivers were hamming it up for the cameras, but the speedway circuit with excessive wheel-spin would have had my T109 torn up, if I had tried that in the '80's.
As slow as possible but as fast as necessary; is still the best approach for the safety of the driver and passengers and the wellbeing of the vehicle.