IN FOUR HUNDRED YARDS, TURN RIGHT.

“Oo, nonsense! Not that way. Go up Nover’s Hill. That’s Mrs Rathbone’s house. She just died of oldtimers. BUS! This car needs a good clean… Turn left, I mean right. Oo, you’ve missed it! We’ll be late. VAN!”

Unfortunately, there’s no turning off SatNan.

Viv Burgess is not a back seat driver herself, but is usually ranting at her own satnav.