Top right - mine, and my Mom's
Bottom left - my cousin
Bottom right - my sister
Lucas and I chose to do one square. He did about one quarter of the square before becoming interested in the firetrucks driving around.
That's a boy for you.
Honestly, I really didn't mind finishing the square. How often do I have an excuses to sit on a Lightning McQueen towel in the middle of the street with a box of chalk coloring.