I for myself will be into imports like the Japanese even when im well over 50. Hopefully till the day I die. But would be on a different scale. My style now is more on the Tuner style once I get middle aged it will be VIP styling that I will be going for and exotic cars.
But to answer your question I believe imports are here to stay. And the die hard fans will collect or store their favorite old school cars during their time and focus on keeping them original as possible.