In 15 years of economic reform, one of the world's smallest markets has exchanged a dozen tariff-protected car plants for some of the cheapest cars in the world. Dave Moore reports from New Zealand. With the same land area as Britain, a 20th of its population, petrol and diesel at $NZ1.15 ($US0.46) and NZ84 cents a litre ($US0.33), and meaningful public transport found only in its capital Wellington, New Zealand relies upon and loves the motor car.