In what year did Donald Campbell set both world land and water speed records?

Donald Malcolm Campbell CBE (23 March 1921 – 4 January 1967) was a British speed record breaker who broke eight absolute world speed records on water and on land in the 1950s and 1960s. He remains the only person to set both world land and water speed records in the same year (1964). He died during a speed attempt at the Lake District in northern England.

Campbell now planned to go after the Water Speed Record one more time with Bluebird K7 - to do what he had aimed for so many years ago, during the initial planning stages of CN7 – break both records in the same year. After more delays, he finally achieved his seventh WSR at Lake Dumbleyung near Perth, Western Australia, on the last day of 1964, at a speed of 276.33 mph (444.71 km/h). He had become the first, and so far only, person to set both land and water speed records in the same year.

Campbell's LSR was short-lived, because FIA rule changes meant that pure jet cars would be eligible to set records from October 1964. Campbell's 429 mph (690 km/h) speed on his final Lake Eyre run remained the highest speed achieved by a wheel-driven car until 2001; Bluebird CN7 is now on display at the National Motor Museum at Beaulieu in Hampshire, England, her potential only partly realised.