This is a really cool draw!! This reminds me of years ago when I lived in Indiana, and I worked in a factory there. The factory produced all kinds of "cases".....like briefcases, camera cases, musical instrument cases, etc. All the cases would come down the assembly line.....just like the way you have those volkswagon cars coming down the assembly line in your "pic"......and the "workers" would have to put different "parts" on the cases as they come down the line.....it was fun!!!! Great draw!!!! :)