It's nice to see a metro train in London that uses overhead AC power lines; most of the London mass transit lines were running before the Yugoslavian-American inventor called Nicola Tesla invented AC power transmission so they stuck with direct current. (Yugoslavia fragmented into several smaller countries in the '90s, Kosovo Serbia and places like that). In those days it was probably easy to be a news broacaster because there was always something happening. These days they have to talk about tap water privatisation for 2 hours or things like that. They can lul a professor to sleep sometimes.
The train is very cool, it is open plan and spacious with lots of low hanging handles for those that can't find a seat. I was surprised the station platforms didn't have much benches, I thought it would be a good idea to put seating benches up against every stretch of wall in the station so people can sit down while they wait for a train. I also found it difficult to see the map of the line inside the train but that's no big deal. It was a bit too crowded for me, I never imagined it would be so popular. It certainly helps relieve crowding on the other lines.
I learnt that the tfl charging cap goes up if you go from Heathrow airport on an Elizabeth line train because they have to use some of a private railway's tracks.