sometimes I post drunk and can be a little bit abrasive but this isn't the same type of engine you work on...not at all. A turbine engine would not work at these speeds.
http://www.aip.org/tip/INPHFA/vol-10/iss-4/p24.html
and what you posted above makes no sense to me, it's like saying you use the same amout of fuel weather you drive on the highway at 60 or 100mph. There are substantial forces to overcome to reach these speeds. It will never translate to public use, not in our lifetime. Nasa isn't working on scram jet technology because they are thinking of propelling a 747 to Mach 10 either so you can have lunch in paris. In will most likely end up pushing a missle and they are looking at it as a possible more efficent method of putting a spacecraft into orbit.
btw, m1a1 isn't going to win any fuel efficency awards any time soon.