The answer: Restoring an original 1937 Aprilia Berlina is very, very hard (but worth every wad of $100 bills and gallon of sweat). I visited the legendary Conrad Stevenson's Alfa Romeo shop last weekend and found this work-of-art-in-progress there.
Old guys in polo shirts nurturing vintage Ferraris? Industry people showing off concepts which will never get built? What's the point? Not much: but it's a great way to spend a weekend in Italy.