Latest Boeing 777X taxi test videos have been posted to Twitter and we bring them to you here at Airline Ratings. These videos are from Andrew Wiggin (@EnderFPE), Jennifer Schuld (@JenSchuld), Christopher Lee (@propandkerosene), and The Points Guy (@thepointsguy). WATCH Boeing 777X interior video. https://twitter.com/i/status/1158518240877805569 https://twitter.com/i/status/1159168567721357312 https://twitter.com/i/status/1159591500482613249 https://twitter.com/i/status/1159537746404265984 https://twitter.com/i/status/1145814336234897408 https://twitter.com/i/status/1159552493048590339 The Boeing 777X combines the best features of the current 777 with a longer and wider fuselage, new engine and the composite wing design from the Boeing 787. It also features 20 per cent larger windows and lowers pressurization altitude to reduce jet lag. WATCH: Amazing thermal video of Boeing 757 landing The 777-9X seats more than 400 passengers, depending on an airline’s configuration choices. With a range of more than 8,200 nautical miles (15,185 km), the aircraft will have the lowest operating cost per seat of any commercial aircraft says, Boeing. The second member of the family, the 777-8X, will be the most flexible jet in the world claims Boeing. The aircraft will seat 350 passengers and offer a range capability of more than 9,300 nautical miles (17,220 km). The driving force behind the 777X is Emirates President Sir Tim Clark, whose airline is the lead buyer with an order for 150. Sir Tim describes the 777X as “an absolute peach”. Key to his enthusiasm is the aircraft’s economics and greater space — it is 20 per cent more efficient per seat than the industry’s long-time benchmark the 777-300ER. The 777X is due to fly early nxt year and be delivered late in 2020.