The world hasn’t seen commercial supersonic travel in nearly 20 years since the Concorde was retired in 2003, but all that is about to change with the development of a new, environmentally friendly airliner.

Meet Overture – the world’s fastest airliner that was developed by Denver-based Boom Supersonic.

With 26 million hours of designing and testing, Overture will run on 100% sustainable aviation fuel (SAF) as it flies at Mach 1.7 over the ocean, shuttling between 68-80 passengers up to nearly 5,000 miles.

The updated design features four engines that will keep weight and temperature balanced, which will also lower the size requirements of the wing-mounted engines.