The Waikato has a similar problem to the likes of the Kapiti Coast if you're heading in/out of Welly, lots of traffic using only a few roads. Slow noddies need to be overtaken by faster noddies and this merely brings to light the overestimating of vehicular control abilities.

Still, never ceases to amuse me when I'm driving a truck limited to 90 and the traffic flow can't even get to that speed over the holiday season...such is the paranoia created by the dreaded 4 click tolerance