Along similar lines I just read an article about how the latest versions of Chargers, Challengers, Cameros, Mustangs etc. will be the next great collector cars.
It is in part due to their retro styling which were "classic" to begin with but also because they have the HP guts to match. The power options have been unparalleled these last ten years or so and the amount of power available in that number and differing price ranges of vehicles hasn't happened since the 60's. It has been a unique decade as there was a market for all this that drove the designs and power (aka the baby boomers who had the money and wanted cars from their childhood.)
But, according to this article that's about to come to an end with gradual but certain EPA restrictions coming that make it nearly impossible to engineer that kind of power.
Modifications will always be possible but even the base power plants will likely not be as conducive for it. And of course all that means more desirability for the pre strict EPA rules vehicles.
Anyway, interesting. The V's, LS1, and new Hemi's may be well be a last great show of American muscle. Might be a good time to buy one of the aforementioned vehicles.
Of course you'll have to keep it another 30 years to see if this article is right.
Still, the government involvement has a huge bearing on all this...just like this issue discussed here with the NHTSB and Jeeps being open tops.