First you have to understand that gas here is still cheaper than in other countries. In Europe it costs twice this amount, and has always cost much more. You will notice that American-style hot rodding happens there anyway.

Another point is that gas cost is not such an issue, unless it is the car you use to get to work each day, and is driven 400-500 times a year. A "hobby car" is not that much of an issue for your fuel budget.

Car shows, and local events, may replace cruises, attending distant events, and drag racing, for some people.

If gas cost does not decline, I can see future builders using smaller more fuel efficient engines.....and maybe building somewhat lighter cars.

We will "adapt & improvise"....and the hobby will endure!