Who said the Swiss don't have a sense of humour? The police there were amazed to catch the same driver with the same speed camera no less than four times in one minute 37 seconds.

Claiming that he had no idea it was a speed trap, the driver said he returned three times because he thought someone was playing games with a flashgun and he wanted to double-check.

When their chortles had subsided, the police admitted that such a feat took precision driving and a "little bit of stupidity".

However, ignorance is no defence, and the driver is to be prosecuted for four separate speeding offences under Switzerland's tough traffic laws.