Gulfstream
- The Bombardier Global 8000 is poised to become the world's new fastest private jet come 2025.
- For now, the two speediest purpose-built private planes in service rocket at over 700 mph.
- Manufacturers are battling to build faster business jets as the demand for private aviation booms.
The fastest commercial airliner still in service today is the 50-year-old Boeing 747, which can reach speeds of up to Mach 0.92, or 706 mph at sea level.