And I agree you've assessed that journey correctly: important, but not essential. While I agree with pointing at the panic-buyers, I am going to point a little finger (?!?!?) at you for emphasising in your story that the situation "could then have become life-threatening" which is strictly true but a bit misleading. After all, getting out of bed in the morning could become life-threatening if it goes badly wrong. There were far more ways that it could (and indeed should) have still worked out OK for Boletta without a parental car visit.
I don't excuse myself either: my journey was not essential strictly-speaking, my small extra purchase on Friday to give me the range to reach home Sunday won't have helped and it was almost only luck that I was refuelling at a big station before the panic started causing outages there.
I apologise for misinterpreting one being mentioned immediately after the other.
And then this digs the hole further! How can you be sure that none of those A&E staff "caught out" or the patient transports suffering "some fuel-related shuffling" weren't after you at the "very last place [in] the City [that] had some fuel"? Maybe everyone thinks their own journey's important? You do and I did too (both about your journey and mine).
I would really like things to change so that at least strategic service stations (the ones mentioned earlier as planned and previously government-leased) go to some sort of "essential workers only" service once they reach a certain reasoned low point, instead of selling out... but will any government be brave enough to say "Bollo can't go on that mercy mission and mjr can't go to this funeral because we are failing at sustainable transport and need to make sure NHS workers can still car to work"? I think fuel outages will become more common as it runs out and/or demand dwindles, and we switch over to other transport, so this nettle will be offered up for grasping many more times in the future.