4 ms·ZEHST the world's first hypersonic plane unveiled, travels at 5029km/h2 points by Paulosborne 15y agonatural_order 15y ago40 years until the first passeger flight?! That's eons in terms of transport and energy technology developmentathan 15y agoyeah, what he saidzeemonkee 15y agoFunny that - Concorde from drawing board to maiden voyage was what - 12 years ? JFK's speech to moon landing - 8 or 9 years ? Seems that despite all the advances in computer modelling etc we're going backwards.