I was there on opening day, and it seemed to me the MINI had the deepest crowd around it, considering there were like 4 of em on the floor. The 350Z had a huge crowd but it was the only one and was on a turntable.
We'll see how popular it will be overall, but considering the crowd reaction, and how NewBeetles sold like crazy here, it should do really well.
I don't think any of em were unlocked that morning, although the windows were down on at least one, but it was locked with the remote so the inside handle wouldn't open the door, the same way it works on E46s.