Let's address the elephant in the room: baby boomers.
That's not to say focuses in collecting won't inevitably shift. Younger collectors dig muscle cars, but they also love 1980s German sedans and 1990s Japanese coupes. What happens when the people for whom muscle cars represent the red-hot center of their passion gradually age out of the market? Prewar cars may hold some of the answers we seek. If conventional wisdom held true, that later generations won't be interested in the cars of their fathers, then the prewar market must be rock bottom, right?
The above is a reoccurring theme.
But discounting the Saudi, an anonymous billionaire and the Hollywood buyer of "high end" cars, I see one thing that is never talked about in these articles.
There is a basic difference between your grandfather's Model A, a 32 Ford Coupe and a 1969 car.
The 1970 car is basically a "modern car" without all the bells and whistles.
ABS brakes, airbags, cruise control, electric windows, computers, doors that lock when you don't tell them too and the all important cup holders.
As long as gas is available, one can drive a 1972 car every day on the freeway.
Only two things will kill a Dodge Dart.
Rust and wreck.
So, I think there will always be a market for the Everyman car.
That "289 Mustang" even.
Of course, some people ARE looking for museum pieces.