The Petersen Automotive Museum recently announced it will open its “vault” (and by vault we mean parking lot), so that weekend visitors who pay an extra $25 can get a tour of the super secret cars the museum doesn’t have room to display in its galleries upstairs. The special treat is the result of a $100 million donation Petersen received in the spring of 2012, which is when we got a sneak peek of the private collection. Click here to see the slide show.

Photo by Israel Lemus