From June last year.
Dyson unveils 'world's fastest motor' in new vacuum - Telegraph
Dyson unveils 'world's fastest motor' in new vacuum - Telegraph
At 104,000 revolutions per minute, the motor turns ten times as fast as a commercial aircraft, five times as fast as a Formula 1 engine and more than twice as fast as the most powerful industrial milling machines.
The only thing quicker is a dentist's drill, but that is technically a turbine, not a motor.