Those aluminum cans are a marvel of modern manufacturing. They've controlled the wallthickness so well that they can make them just thick enough to contain the worstcase pressure. You can't even pick up an openned can more than half full without buckling the outside walls.

Another new aluminum bev container is the Bud aluminum bottle. They are available in some stores in the regular and Bud Light brands. I have one that is cut in half lengthwise to see the interior, which hangs on my wall at work.