https://bringatrailer.com/listing/2008-ford-mustang-bullitt-62/
Pretty good on this one, considering that I paid $30,075 for my '09. That was in April of '09, new, licensed & out the door.
However, this price is not even an inflation hedge. But considering that consumer reports says any car retaining 50% of it's value after five years is doing well, not a bad retention. Far better than most cars, worse only to a lofty few. To me, shows the folly of thinking one can pick a new future collectable. Showing my age, but I remember when the 356 Speedster was the "entry level" Porsche.