Land speed record

[7] Different clubs had different standards and did not always recognize the same world records[8] until 1924, when the Association Internationale des Automobile Clubs Reconnus (AIACR) introduced new regulations: two passes in opposite directions (to negate the effects of wind) averaged with a maximum of 30 minutes (later more) between runs, average gradient of the racing surface not more than 1 percent, timing gear accurate within 0.01sec, and cars must be wheel-driven.

[13][14][15] In 1963, Paula Murphy drove a Studebaker Avanti to 262 km/h (163 mph) at the Bonneville Salt Flats as part of Andy Granatelli's attempt on the overall record.

[12] In 1964, she was asked by the tire company Goodyear to try to improve her own record, which she raised to 364.31 km/h (226.37 mph) in Walt Arfons's jet dragster Avenger.

[18] In 1976, the women's absolute record was set by Kitty O'Neil, in the jet-powered, three-wheeled SMI Motivator, at the Alvord Desert.

[19] Held back by her contract with a sponsor and using only 60 percent of her car's power, O'Neil reached an average speed of 825.127 km/h (512.710 mph).

The vehicle breached the FIA regulations on two grounds: it had only three wheels, and it was not wheel-driven, since its jet engine did not supply power to its axles.

[42] The confusion of having three different LSRs lasted until December 11, 1964, when the FIA and FIM met in Paris and agreed to recognize as an absolute LSR the higher speed recorded by either body, by any vehicles running on wheels, whether wheel-driven or not.