Brettmann: A couple of random garage design thoughts, if I may

-a nice 350 or so sq ft storage area, with some floor to ceiling shelving, off the garage so that all you have in the garage is..........cars!! Surveys show 85% of Americans cannot fully utilize their garages for their cars because they lack of storage space for "stuff"....
-a storage area in the attic, accessible via say a pull down ladder arrangement, with flooring, power and lighting, attic venting for the summertime, is very cool. I plan on doing a permanent train setup for my 1955 Lionel train set up there....heh heh
-some nice venting and the appropriate sized fan setup, so that when you pull your Challenger in, or any other vehicle, all the exhaust gases are evacuated in short order
-at least one 220 outlet in case 220 is ever needed for who knows what-ie a macho air compressor
-some running water and a sink

Well, the list is probably endless, and dollar sensitive. The above items seem relatively inexpensive..........