When I built my car hole I decided to put an 8 foot by 16 foot room in the back of it for my wood working. The problem I ran into is that, well, I either need to get a shorter truck or add on to the front of the car hole. When I decided to build the thing I made a deal with my wife. I would stay out of HER yard and HER flowers and she would stay out of MY car hole. Yea right. Now I trip over the mower and weed eater and other assorted yard implements from HER yard. Other than the minor inconvenience of that it has worked out well. It is heated but doesn't have air con. That's what fans are for anyway.
Ron C.