I saw a news article about this pop up on my feed earlier - which had more info. He's not actually commuting every day. Just 3 days a week. They're also building an office for him in Newport for him to work out of.
I want to watch a documentary about the dickheads that came up with the spin phrasing "supercommute" to try to preempt us naturally labeling this "Planet-fucking-pollute-o-rama"