There aren’t many people in New Zealand but we have more cars/head than most (~2.5 million cars/4 million people). Then consider not far off half the population live in one city and it is squeezed onto a narrow isthmus between two harbours*. So we do have traffic and now so do our Google Maps (UPDATE 2012-04-13: and Google Earth):
Kiwi automobile commuters, we want to reduce your time stuck in traffic. Today we have expanded our live traffic coverage in Google Maps to cities in New Zealand.
* My Glen Eden to Northcote daily commute is not far short of a cross country drive but only takes about 30 minutes.