I went full-blown commando on a sealed dump bin last night as well. As usual I did not leave a mess but I admit I did it without permission. I rarely do anything without asking but after wandering around for 10 minutes looking for a helpful/cooperative employee, coupled with the fact that this store already has 2 full dump bins on the floor and they may not want to open it, I decided to go for it. There were lots of red birds, green pigs, and mystery machines, which I left behind, but I did buy 4 cars.
This is the regular hunt, for 2013 they are hidden just like the supers were in 2012. Notice the circle flame logo, this will likely be a theme on the hunts for 2013.
And I pulled 2 of the Super Torinos as well:
The circle/flame logo and this message is printed on the treasure hunt cards and at least partially obscured by the car in the blister. Not sure, but maybe this is a temporary thing until the learning curve is over.