The model is designated Gulfstream GVI in its type certificate, and may be configured to carry from 11 to 18 passengers. Gulfstream began the G650 program in 2005 and revealed it to the public in 2008. The G650 is the company's largest and fastest business jet with a top speed of Mach 0.925. The aircraft project was named the 2014 winner of the Collier Trophy, for having "strengthened business aviation through significant technological advancements in aircraft performance, cabin comfort, and safety." The G650ER is an extended-range version of the G650. The 300th was delivered in April 2018, just over five years since introduction in December 2012. The 400th was delivered in December 2019, seven years after the type's introduction. There are three variants, the basic G650, the G650ER (Extended Range), and the G700 with a 10ft 1in extension of the fuselage. Fof full details of t he development, design and variants, click here. Private owners of G650 models include Jeff Bezos (Amazon), Paul Allen (Microsoft), Bill Gates (Microsoft, owns 2), Elon Musk (Spacex, Tesla), Stephen Spielberg (Dreamworks) and Oprah Winfrey, among others. The specifications below are for the basic G650 model. Gulfstream G650 Gulfstream G650ER Gulfstream G700 (identified by the 10 windows per side)