DieterHH,  At this point in time, chartering a business jet is probably the most reasonable method of traveling if you can afford to do so.  I would like to challenge Charles Bombardier @ Imaginactive to a Race around the virtual world using Laminar Research's  X-Plane 10 Flight Simulator.  Charles can fly the Paradoxal  and  I will fly my modified  X-Plane ( X-30 ) National Aero Space Plane. I call my plane the Aurora and I believe that it is the fastest civilian/military plane in the virtual aviation world.  I was able to fly the Aurora with a payload of 220 passengers+flight crew on a non-stop flight from London Heathrow, UK to Mumbai, India to Sydney, Australia  ( Distance:  10,800 miles,  Cruise altitude:  350,000 Ft ASL ,  Cruise airspeed:  Mach 32  or  22,400 mph )  Total trip time:  50 minutes or less than  1 hour.  The Aurora does not produce a Sonic boom nor will it burn up on reentry from Low Earth Orbit.  Cheers,  Randall