R.C. Payne wrote:

The bit that makes the least sense to me is the line, in both papers,
"sending the bus careering about 100m down the road". 100m is a long
way for a bus to travel apparently not under control.

If you started an ordinary car and put it into low gear before jumping
out of it, how far do you think it would go? (NB I am not advocating
anything other than a thought experiment.)

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http://gallery120232.fotopic.net/p9633014.html
(45 145 at Leicester, 3 Sep 1979)