The Sonic Cruiser project was finally abandoned by December 2002 in favor of the slower but more fuel-efficient Project Yellowstone/7E7 (later renamed Boeing 787 Dreamliner).[7][26][27] Much of the research from the Sonic Cruiser was applied to the 787, including carbon fiber reinforced plastic for the fuselage and wings, bleedless engines, cockpit and avionics design.[28]