Or just a hybrid HTHL vehicle, think SpaceShipTwo with an additional airbreathing engine and some thermal protection instead of a fancy feathered system (not fe

Or just a hybrid HTHL vehicle, think SpaceShipTwo with an additional airbreathing engine and some thermal protection instead of a fancy feathered system (not feasible at high velocities). Take off on a quiet engine, get away from cities, make a rocket-powered suborbital jump, vomit in between, re-enter, land quietly across the pond. (still sounds handwavy and not very realistic, though)