Fascinating piece, but the answer is that Always Collectible cars are for those who collect cars as others would collect other objects of great rarity and beauty. Any use degrades the desire the collector feels for them. The Collectible Now cars, on the other hand, should be called Enthusiast Cars. These people want to enjoy their classic, to drive it, to share their passion with fellow enthusiasts. They love the smell of a hot engine, the sound of fine engineering and how it feels on a fine twisty road early in the morning. The author says the reason enthusiasts prefer more than 100 miles is not clear, but that is a Collector’s perspective: very little causes as much hidden damage to a car as sitting around doing nothing. To really understand the market, you need to understand how the buyers make their value decisions.