Chinese maglev hyperloop train hits 387 mph and could someday outpace a plane.
MPH: Innovating luxury automotive with prestige partnerships
SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 | Believed to be a top-secret project of the US Air Force, the SR-72 is touted to reach over 4,000 mph (6,437 kph), making it the fastest plane ever developed.
