The top mistakes in Shortland Street http://www.moviemistakes.com/tv7015 en Sat, 30 Aug 2008 05:55:33 +0000 132338 In many episodes, cars which are said to be owned by a character have a Certificate of Fitness on their windscreen. Private passenger vehicles in New Zealand under 3.5 tonnes have a Warrant of Fitness, not a Certificate of Fitness. This means these cars are most likely rentals.