I heard a story about John Riley selling a Ford 10 to a "new New Zealander" (from one of the Pacific islands). Some time later the purchaser came back. He had got a puncture and discovered (a) that cars should have a spare wheel and (b) that his car did not have one. John disappeared out the back and soon came back with a Ford 10 spare wheel which just happened to be the correct colour for the car! He sold the hapless islander what was rightfully his own wheel for 5 quid!