Future of the classic car hobby may be unstable per experts?

My daughter is 7. She enjoys building car models, helping me in the garage, going to car shows, drag races, etc., along with all the other things a seven year old girl would normally be into (dolls, games, the computer, etc.). Any time at a show or cruise somebody is looking at my Polara, which is her favorite, she immediately points out loud and clear that it is not for sale, lol. She has gone with me to shows and cruise-ins since before she could walk, and has listened with mesmerized interest any time a cammed up V8 with loud pipes is loping at idle.