Why are people making a big deal about the queen getting a train? The Royal family (including the queen) use public transport reasonably regularly. It is hardly news.
This is a woman who used to fix military trucks and drive ambulances during the war so I hardly think she'll have too much of problem on a train. She is still able to drive and does in fact drive herself around in her Range Rover quite frequently. Just because you have money doesn't mean you have to be chauffeur driven around in a gold-plated Rolls everywhere!
Also, using a train in the UK is hardly "slumming it". That's pretty disrespectful to much of the world who frequently travel in comparatively dreadful conditions - or to those who've ever journeyed on a bus operated by First Group!
Tagged: Queen-Elizabeth, train, monarchy, outrage, Royals