EasyJet is to be the first airline to test a fuel-saving electric taxiing system being developed by Honeywell and Safran. Operational trials on the Airbus A320 are expected to begin in 2013, with the system to be available by 2016. The electric green taxiing system (EGTS) uses motors on the main landing-gear wheels, powered by the aircraft's auxiliary power unit. Honeywell “conservatively estimates” that the EGTS will save an average $160 per segment for an A320 or Boeing 737 operator, and 130 tons of fuel per year per aircraft