That’s what lot’s of boys (and I’m sure a quite few girls) said this morning when they saw this story in today’s Washington Post about the scramjet. Here’s the opener:

HAMPTON, Va. — They call it a “scramjet,” an engine so blindingly fast that it could carry an airplane from San Francisco to Washington, D.C., in about 20 minutes — or even quicker. So fast it could put satellites in space. So fast it could drop a cruise missile on an enemy target, almost like shooting a rifle.
Next week, NASA plans to break the aircraft speed record for the second time in 7 1/2 months by flying its rocket-assisted X-43A scramjet craft 110,000 feet above the Pacific Ocean at speeds close to Mach 10 — about 7,200 mph, or 10 times the speed of sound.