[Skuzzy]

Ok, I am in the middle of a new house build and with that I am building a detached 'toy room'.

10' plate line with interior ceiling pitched to 12'. (should be able to handle the Cobra)
Fully insulated. (I have a western exposure and really hate the heat)
2000cfm exhaust fan. (paint, cleaners, farts,..whatever fumes)
wall hanging 2 ton A/C unit (80F to 85F is comfy)
220v for the tig welder and compressor. (well, duh)
stainless steel wash basin. (gotta clean those parts somewhere and hands too)
1200w stereo amp and wall hung speakers, convertible to moving the speakers to the outside wall for pool parties. (i like me some tunes when working and there is no game on)
chemical seal for the concrete floor. (it never changes with age and abuse)
4 post lift. (getting too old to crawl around under a low sitting car)
9) 4' fluorescent, dual bulb, light fixtures. (just try and hide a paint flaw)
carriage doors on both sides. (keeps the ceiling from blocking the lift)
ethernet connection to the server/Internet in the house. (how do i get my tunes)
television cable to the distribution center in the house. (not going to miss the game)

The sheetrock is in and it is looking good.

Oh, they did over engineer the slab as well. 12 inches thick, reinforced with 5/8" rebar tied on 12 inch cross points raised 6 inches from the base pour and a steel chicken wire grid 3 inches above that, with 9 piers, 8 feet into the ground.

Should be able to park a 16 ton Mack on it without worrying about it.

I will add cabinets from 6' on up to the ceiling edge. Anything on the floor will be on casters. This will allow me to arrange the garage to accomplish the task(s) of the day. Makes it easier to clean as well.

That is how I did it.