Give me $500 million today and I promise to give you a plane ride in 2028 @ mach 2.1. Fueled by unicorn magic dust and daisies.
Check is in the mail
They had better hurry up. Elon is threatening to have the Starship and Superheavy ready for suborbital hops that could make the flight time from LA to London a lot closer to 1 hour. Makes this new plane sound not so super-fast in comparison.