Hyundai displayed at the NGV Global 2012 in Mexico City earlier this month, showing a low-entry Super Aero City transit bus with 11.1-liter C6AE engine and an HD120 urban delivery vehicle with 6-liter C6GA engine, both fueled solely by compressed natural gas. The Mexico City transit agency RTP operates 30 of Hyundai’s Super Aero City transit buses on CNG, while the Mexican food company Jumex operates a CNG-fueled Hyundai HD120 truck.