At a certain point a city has to decide what it wants to prioritise, cars or buses or bicycles.  You can't do all three well.

 

Amsterdam is a great example, its a good place to walk in or fantastic place to bike in, but not that great for driving.  To do a great job for cyclists you have to inconvenience cars and buses which is probably not a good idea in any NZ city at this point.  With e-bikes this might change, and bikes could end up being a lot more common than now which changes the priorities.