Faster still

[aeromed202]

Something that caught my eye today, mach5+.

http://www.wired.com/autopia/2012/11/reaction-engines-hypersonic/

Glad it's so easy is FS, just a few edits and Voila

 

[Sascha66]

Sounds like a very complicated idea - me, I would ride in that thing only after it has flown without crashing for a couple of years.

Be nice to have a thing like that for FS, though!