Sure, but anecdotally, most people don't have gas cans of significant capacity and many don't have any cans at all. I live in the American south and we had a g

Sure, but anecdotally, most people don't have gas cans of significant capacity and many don't have any cans at all. I live in the American south and we had a gas shortage like this in the spring due to a ransomware attack. There were pictures on social media of people trying to fill up all sorts of nonstandard containers ranging from buckets to grocery bags (yep). But I think the people who would buy gas cans for this, or try such silly alternative storage methods, are a minority and most won't expend the effort to pursue additional storage capacity beyond their vehicle's tank.