[edit in response to the almost random downvote that I seem to get at first] Point is that soda can engineering responded to the embarrassment of the ubiquitous

[edit in response to the almost random downvote that I seem to get at first] Point is that soda can engineering responded to the embarrassment of the ubiquitous littering and made a product that took care of it. The evolution of the soda can in my lifetime is very interesting, starting with steel cans, then aluminum, the retained opener, the elimination of the separate bottom, and finally the ever reducing top diameter and wall thickness to reduce the material use. Cheers!