Plane old trees

Now I'm feeling a bit old. I remember when these plane trees were put in as young saplings barely half the height of the buildings when King Edward Street was paved over in the early 90's to make a pedestrian paradise. I imagine some planner in an office somewhere said something along the lines of "we must have a little bit of greenery here stick in a few of those cheap little old plane trees, they'll do." Well now those ickle trees are bigger than the buildings and still growing, I've read they can get to nearly 100 feet so still some way to go yet.