I'll start, with the Volo in IL, which I got a chance to check out while having some work done at MW last week. The have hundreds of perfectly restored vintage cars there, and most of them are for sale. Visiting a car museum is a different experience when your dream car is out in the parking lot, though, haha...
A few I might have wanted if I had unlimited funds and garage space:
Attachment 51140Attachment 51141Attachment 51142Attachment 51143Attachment 51144
Batmobile:
Attachment 51145
Elvis's station wagon:
Attachment 51146
Barbie Cadillac:
Attachment 51147
Ecto 1:
Attachment 51148
Obligatory BTTF car:
Attachment 51149
(It's a George Barris replica and honestly not that impressive if you've seen really well-done ones before.)
Post your favorite museum pics/recommendations!