Plans for a pollution-free ‘rocket-plane’ which could cut the flying time from London to Tokyo by more than a quarter to just two-and-a-half hours have been unveiled in Paris.
The 3000mph hypersonic jet, codenamed ZEHST, would travel 20 miles up in the sky and cut the journey time from the minimum 11 hours 20 minutes it currently takes to reach Japan.

It could be in the skies within a decade, with commercial flights at four times the speed of sound pencilled in for 40 years-time.

New York would take less than an hour-and-a-half, while popular holiday destinations in southern Europe like Nice or Malaga would take a few minutes.

http://www.dailymail.co.uk/sciencete...ars-build.html