Middle East Online. Yangwang U9 Xtreme reaches 503.17 kph in Abu Dhabi, becoming the first production car to break 500 kph and setting a new speed record. BYD's Yangwang U9 Xtreme reaches 503.17 km/h in Abu Dhabi, becoming the first production car to exceed 500 km/h in an FIA-recognised speed run.