Tāmaki Makaurau / Auckland

I think you're probably right. The wibbly-wobbly-ness of it makes it look like the surface of water, though admittedly on my computer rather than my phone it looks a lot more like a wet road. I'd guess the wobbly nature of the surface is partly due to wear as you say, but also I presume road building techniques have come a long way in the last 100 years.