Here is my mates shed (yes I have shed envy every time I go there)..
It is 18m x 12m x tall, it has a standard roller door at each end, (of which one opens to a ute height dock), 2 chain operated roller doors (pretty wide ones too), mezanine, etc. etc. Half of the shed is timber flooring, while the other half is concrete (12m x 9m of each).
If he would just throw a hoist and a Dyno in there, I reckon I'd be in heaven...
Out of interest, the gold car in the picture is a Ford Lincoln Continental Town car (460 big block), in excellent original condition with just over 100k on the clock... very nice!!!