I'm betting they will do the windows/man door with a chain saw, but also curious to see.
Here's how I plan on laying out the inside. I thought about diving the back half to keep the dirty area and the man area separate, but that would really limit the use of the garage in other ways. The building faces west and we have a breeze pretty much every day where we live. (only ran the air twice this year!)
So the plan is to open up the back 8' door and have a nice wind through the shop to carry through dirt, sawdust etc through and out of the back corner. On nice days, I'll roll the table saw, welder etc to the slab outside the 8x8 door and do all my dirty work outside.
I'm keeping the space as wide open as possible because I may be using it as a photography studio shooting vehicles, but not for another year or so. That's why I went with the 12' ceilings.
People say build it as big as you need, then add a little more.
32x40 is big enough for now and the near future. After seeing how big this building is, I can't imagine having gone with a 32x48'. That extra 8' would have been really nice but this size is already looking like a monster behind our house! I'm just going to have to learn how to use my available space better and actually try not to collect as much car parts (or as my wife says, junk) but that's what the attic is for!