Checked this out today and was overall pleased. Staffers telling you to park was very handy. Your eye is immediately captured by Horny Mike's bus outside.
Inside after a quick sign in, you can pretty much roam the alloted area freely. It's great to see cars you've seen on tv. That said, cars are stacked on top of each other, making it hard to see all the cars and there is almost no signage to indicate what's what. More casual car fans like myself would have appreciated the help, I saw another guest wondering aloud what a given car was.
Still, considering it's free and they don't advertise it as anything other than what it is: a chance to see Danny's collection, you can't complain. Fans should enjoy the quick (maybe 15 min) walk through.