Jafo - Some interesting facts:
America's Dave Campos, riding a 7-m (23-ft) long streamliner named Easyriders, set American Motorcyclist Association (AMA) and Federation Internationale de Motorcyclisme (FIM) absolute speed records with an overall average speed of 518.450 km/h (322.150 mph), and completed the faster run at an average of 519.609 km/h (322.870 mph), at Bonneville Salt Flats, Utah, USA, on July 14, 1990. The Streamliner weighed 1133.9 kg (2,500 lb) and was powered by two 1,500 cc Ruxton Harley-Davidson engines.
The highest speed ever achieved on a bicycle is 268.831 km/h (167.043 mph), by Fred Rompelberg (The Netherlands) at Bonneville Salt Flats, Utah, USA, on October 3, 1995. His record attempt was greatly assisted by the slipstream from his lead vehicle. Fred has been cycling professionally for nearly 30 years and during that time has held 11 world records.