fortune no....but I still believe the same is true with cool cars of every gen. Once some time has gone by and there are a lot less of them out there (especially ones with lower mileage and in good condition) it is going to generate some demand.
I realize Dennis's collection is extremely unique and does not set the bar for the rest of us, but it does confirm that the interest is there for the prime examples.
At one time or another you could say that there where too many (insert year, make, model of choice), but time and time again it holds true. Guys get to a point in their lives and they chase after their youth. a big part of that is the cars they remember as kids and teenagers. there are some pretty unimpressive (performance spec wise) cars from the 70's and 80's that are starting to get attention and demand some money. The reason? exactly what I explained above.
10-15 years is a long time. Electric cars could be the norm, or smaller displacement + electric, who knows. You don't think that will have an impact on car values?
I think once the new edge is considered a classic (25 year mark) I think its not unrealistic to see nice, lower mileage examples fetch high teens to low 20's. Not to bad for people picking them up now for 10K of less.