You can stay as long as you like, but 2 hours is an adequate amount of time
Yes that is plenty of time to see all.
I don't think there was any two-hour limit when I was there. The guided basement tour (weekends only) is about an hour. I think it took at least another hour to go through the main floor, and we still didn't see the garages.
Thanks for answer...
You can stay as long as you like but I stayed two hours and I looked at everything they have inside and outside. It may take you more than two hours if you want to read every single description of every car.
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