future value of classic performance cars,when to bail out, before the crash?

Ya it's all speculation. Watching Barret Jackson a week ago I saw a lot of resto mods go for big dollars. Now the disclaimer is that the market shouldn't be gauged by BJ auctions but the auctions do have an effect on values. The restored cars were going for reasonable prices. 6 pack and Hemi cars for a bit more than a hundred large? 10 years ago the same cars were 1/4 to 1/2 million. Those resto mods can be driven and abused where the restored cars are more or less trailer queens. It's good that our "lower dollar end of the market" cars are still catching on and affordable to buy and fun to build. I'm staying in till they take my licence away. If I watch what I buy and don't get upside down in the car I should be able to at least break even after a few years of enjoyment. If not, so what. If I loose some money at least I had fun. How many $5-10,000 vacations have I been on that all I have to show for the investment is some nice memories, some photos and some corny souvenirs. Cars are a better return for my money.