Is it possible to travel between New Zealand towns and cities by train?
When abroad, I always like to use rail as much as I can because train lines offer an opportunity to see scenery you otherwise wouldn't see because often train lines are more remote than roads; not to mention more comfortable than driving or travelling by bus.
Is it practical to travel via rail in New Zealand, how frequent are services? I would imagine there is better rail infrastructure on the North Island, how is it on the South Island?
Also, what sort of cost as I looking at, and how fast are trains in New Zealand, are speeds comparable to road travel?