See first post here. Now I really want one: Reuters: "LOS ANGELES - An unmanned experimental jet broke a world record for speed on Tuesday, cruising over the Pacific Ocean at just under 7,000 mph (11,000 kilometers per hour) in a NASA test of cutting-edge “scramjet” engine technology.
The X-43A aircraft flew at a speed of around Mach 9.6 — nearly 10 times the speed of sound — after a booster rocket took it to around 110,000 feet (33.5 kilometers) and then separated."