Started with the wheels

Got some hard maple boards, files loaded in the CNC, and a plan to make my 18 month old grandson a toy truck.  This thing makes great wheels.  The axle holes are all the same size and centered.  I have to cut 8 of these which will make 4 double wide construction tires.  I guess I could have bought them, but I'd never know then, would I.  Everything will be cut from 1" hard maple, except the dowels (which were bought), and the box, which will be cut from  some poplar panels I have on hand.  This way the sides and bottom will be one piece when cut out.