I think you'll find there is no provision for commercial parking buildings in the grand plan, it's all about pedestrian access, cycle ways, and the tram for public transport. The newer buildings are constrained by their resource consents on how many parks can be provisioned & it is a lot less than commercial buildings outside the area. When we moved in to our new building Auckland Transport provided a heap of material on how we could walk/run/ride to & from work and off to meetings etc & how wonderful this was. The Wilson's parking etc in the area now will go over time as development progresses.
The Fonterra/Datacom/Microsoft buildings all have underground carparking. I've heard the Sofitel carpark suffers from flooding although it is a lot closer to the water than the others.