Time capsules are great no matter the marque. To have a factory wrapped one is over the to. Being the owner of 5 original paint and basically stock vehicles ('03, '99, '71, '70, and '68) I can assure you the classics, and even the 99 generate a lot of interest. Most recently I added the 71 jeep (cj5 renegade II) a low mileage single family owned that had been a garage kept original sitting unused the most recent 20 some years. I went to the early cj board in hopes to locate an original oil pressure gauge (unobtanium) and what I posted garnered interest that I was incouraged to post dozens of pics of factory details (others restoring similar vehicles).
For anyone living in the era of increasing smog regulations the buicks and gmc sycone were two that seemed to stand out from the other offerings of the big three. The syclone (a truck) stood out in my mind, one haunted the streets of my hometown regularly shaming a lot of cars late at night.