Funny you say that. I took out two CBT students once. The one in front decided to red line the YBR to get past a car, probs doing 58mph, the YBR screamed like anything and I had to just let him do it, rather than shout down the radio as didn't want to put him off.
It was a sweeping road to the right, you could see for miles over the hedges....... But he didn't see the Kit Car coming the other way!!! To this day, I have no idea how he didn't end up splattered on the driver.
Needless to say, I refused to 'pass' him that day and he had to come back for another day