My sister S drove like a maniac along the Hebridean shoreline, skidding on seaweed and only narrowly avoiding the obstacles along the way – seals, children paddling, random tourists. From the back seat I screamed at her to slow down.

The next thing I knew, from the driver’s seat she was recording an item for the Radio 4 Today programme by mobile phone. As Evan Davies posed interview questions for the piece entitled ‘How bad was my week?’ she made numerous complaints about her backseat driver (me).