Thanks for the compliments, everybody.
The floor is not actual wood-planking; it is stamped and colored concrete, seen up close in the attached photo. For the lower level, I went with stained and cut concrete, seen in the other photo (along with my new winter toy- a six-person "snowmobile" that I told my wife I needed to keep our driveways plowed :biggrin )
I know I said earlier I didn't want to show pics, but don't worry- there are still plenty of surprises to show people, if any of you still want to come by for a garage tour. I have three garages in my home (parts of two of them shown), and for the person who asked for pics of the work space area, most of the real heavy/dirty work I do is done at my shop which I built on my dad's acreage outside of town.