It's St John's in Newfoundland. St John is in Nova Scotia. (People get them mixed up).
A close friend of mine lived in St John's for quite a few years so I've visited him and spent a fair bit of time there. It's a rather unique place. Odd even. Like the film Deliverance sort of odd. One day while he was working, I went out on an fishing boat (iceberg hunting). It was early June and the weather was 'ok' (by local standards - grim by my standards). The ocean waves were massive and so cold and it made me very aware what a brutal place that part of the Atlantic is. Despite wearing waterproofs, by the time we got back to St John's, I was so soaked that even my knickers were wet through! My phone was too wet to work and I had to go into a shop I'd been in earlier that day and ask if they'd mind phoning my friend for me to come and pick me up.
Sounds like a silly little story but having seen the Atlantic there (and heard the stories of Titanic survivors brought ashore there), no way would I be setting foot in some submersible minivan there, billionaire or not. It's cold and wild and you are at the mercy of nature, and that's above the waves!