I think that a lot of people do treat them like investments, but 'short term' investments. Once they see that the DJIA is back, they will put their money there.
Over the long term, yes the muscle cars have gradually increased in value. However, they are very poor investments, comparitively speaking to Wall Street. For example, if you bought a Yenko Deuce in '70 for it's $4400 sticker price, and kept it real nice, it might bring around $65-80k today. If you had invested that $4400 in an average fund that gave you a 35 year avge ROR of 12%, compounded monthly, you would have approximately $290k today!
So, if you are in it for the long term, it doesn't matter what they are worth in dollars because the real rate of return is your personal enjoyment
