I disagree, Busman clearly states that the 0-60 time is measured in calendars rather than seconds and as based on the evidence presented, young kids being prats in a car, bus not capable of accelerating at any real rate, chance of overtaking = nil. It was a non starter before he indicated.
He got fed up and took a gamble, something I think even he will admit was wrong if viewed in the cold light of day. It may have been frustrating being stuck behind them doing 40 but there was no chance they were going to let him pass without incident.
As for wagons 'racing' at 0.0000005mph difference...... Particularly down the M66 before its 3 lanes
There should be a law that if a wagon gets alongside the one on the inside has to slow down to let it in within 1/4 mile.