Thanks for posting. I saw this yesterday – ugh 🙁 Well, at least no-one was hurt.
AutoWeek [on-line] has some security video of the actual collapse and some from a remote-control helicopter that goes down into the hole:
http://www.autoweek.com/article/2014021 … dailydrive

This is a very nice Museum and tribute to "America’s Sports Car", I have been there a couple of times. Unique/Cool building as well.
I hope that they can get everything fixed up… but how do you repair a building that is now sitting over a 30-foot deep hole 😯