50 years ago supersonic passsenger transport was introduced. I think that created a three hour flight to London or Paris from New York.
I thought for sure this would be the wave of the future, but no, it just didn't take off mainly because of the cost of a flight for passengers and the sonic boom if flown at supersonic speeds over land from east to west or the other way around.
Thus we still have the status quo with jet service that began in the 1950's except designs are more efficient and engines are more quiet.
But comfort is compormised today because tourist, the cattle car, has seats closer together and more narrow for a much fatter, obese, passenger clientele and service, like meals and the like are as gone as the supersonic jet is. SAD!