The speed debate, something we all have an opinion on. Speeding certainly is a factor in accidents, but certainly not the only factor.
Speedometers also don't seem to be accurate in most situations.
Quentin Willson is going to take on the Speed Debate in this bit from series 42.

0:00 Introduction
0:25 Quentin Willson and the Speed debate
4:36 End Screen

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