Here's another one of the wonders on display at the GM Heritage Center: yes, that's a Cadillac 500 CID V8 with genuine gold plating. How about that. About the Heritage Center vs. the warehouses... the Heritage Center building isn't large enough to house all the vehicles at once so they are rotated in and out for variety. When they're not on the Heritage Center floor, they're in storage, being serviced, or out on loan/tour somewhere, and if you visit regularly you will eventually see pretty much everything in a year or three. It's not like there's another secret cache of cars somewhere. Link to collection gallery: Inside GM's Private Car Museum | MCG .