Can human fly fast? ... and across a continent in less than one hour?
The NASA some years ago launch the X-43A that is capable to touch 9.3 Mach, and so 12.005,4312 Km/h, (9.8 Mach x 340.29 m/s x 3600s/h x 1000m/h) and so, move from coast-to-coast of Atlantic ocean in less than one hour ...