The hysteria surrounding crashes involving tourists has seen vigilantism hit our roads.
A spate of accidents has led to several incidents in which South Island residents have stopped drivers and confiscated their keys.
I listened to a radio interview with the first of these key confiscators and thought at the time that it wouldn't be long before it turned nasty.
The first two instances, at Franz Josef and near Lindis Pass, were relatively harmless and the keys were handed in at the nearest police station.
Earlier this month, in Greymouth, a motorist signalled a visitor to pull over on the town's Main South Rd and punched him in the face as he seized the keys of the rental car.