Oh man, do I have the video for you!
[*The Ingenious Design of the Aluminum Beverage Can*](https://youtu.be/hUhisi2FBuw?t=423)
In this video Bill Hammack the Engineer Guy explains *all* the facets of what makes the aluminium beverage can a fantastic invention. The timestamp is specifically where he talks about why the cans are pressurised and how that makes them strong!
EDIT: name spelling
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