You think? What makes you think that?
Well for one, muscles cars only became "collectable" because
of the interest rate crash of the '00s. I remember in high school
i bought a 67 Fairlane with a 428 for $300 because the guy
couldnt give it away. Now its a $60k+ car. Same with the Hertz
mustang I almost bought for $1200. When $150k equity loans
could start being had for .04% rates - even people with modest
incomes could suddenly afford, not only to buy, but properly
restore that 428 Hemi they've always wanted as a teenager.
Flash forward to today, there are so many restored cars,
combined with the INCREDIBLE vehicles being produced, divided
by what could be the last generation of real car-guys dying out,
and suddenly there are literally thousands of "one of a kind"
vehicles flooding the market with no one to buy them. Its the
textbook definition of a economic Tulip Bubble.
I personally think its just a matter of a pin-*****; gas shortage,
economic downturn, even a breakthrough in battery technology
and only the rarest of the rare will suddenly be left with any
value whatsoever. I hope it doesnt happen any time soon, but
I wont be surprised if it does.