~Early termination of the trip.~
LOL. I don’t know how is this technology any viable for traveling. Isn’t it easier to take a plane?
Assuming the very considerable technological hurdles could be overcome, the trip would be faster than a commercial airliner flight across the Pacific.
Since this a technology limited to transoceanic travel, it would operate only between the margins of the 1/4 of the Earth’s surface where human beings actually live. Once you reach the shoreline, onward travel would involve debarking and continuing on by conventional jet. Kind of inconvenient for the passengers.
Might be better just to develop a much more economical successor to the Concorde so the tickets don’t cost $10,000 per trip or a hypersonic airliner whose globe spanning speed really would justify the ticket cost. Then you could offer point to point supersonic travel without interruption.
Methinks it’s not exactly commercial. More for...well...think underwater ICBMs.
Don’t be silly, planes don’t work under water.