Elon keeps hinting about competing with airliners for trans-oceanic flights. My bet is that Starship is going to become the suborbital trans-oceanic machine that shrinks the world in a way not seen since the airliner was invented.
She pulled 9Gs out of Khazakstan just so she could see you on Christmas day.
And she has to cruise back in the Morning!
Talk about rocket lag
You can't jump from Mayfair, London to Manhattan with this system, at which point any flight time improvement becomes negligible.
All the check-in gets handled on shore, then a fifteen minute ride out to the platform on a high speed ferry, 20 minutes to onboard, then 30 minutes to any other offshore platform in the world, followed by a 20 minute offboarding, and another fifteen minute ferry ride.
The actual travel time would be less than the time you're expected to wait in the airport prior to boarding an international flight.
https://en.wikipedia.org/wiki/SR.N4
https://en.wikipedia.org/wiki/HSC_Francisco
Maybe a future revival of https://en.wikipedia.org/wiki/Ground-effect_vehicle ?
Or some shiny airtaxi vtol running on renewables, electricity, handwavium?
(still sounds handwavy and not very realistic, though)