The Class 1 Dubai Grand Prix was called off after two pilots of one of the leading powerboats were killed in a high-speed crash Friday. Victory 1 lost control, flipped and landed upside down, killing UAE driver Mohammed Majid Al-Muhairi and French throttleman Jean-Marc Sanchez during race one of the final round of the Class 1 World Powerboat Championship. Muhairi, 34, was the European Class One champion in 2009, while 48-year-old Sanchez was part of the 2007 World Class One champion team. The duo was airlifted to a local hospital where they were pronounced dead on arrival.