unbelievable speed

Translations
невероятная скорость
The car reached an unbelievable speed on the race track.
Машина достигла невероятной скорости на гоночной трассе.
Definitions
A rate of movement or action that is so fast it is difficult to comprehend or seems impossible.
Words
speed

noun
скорость
unbelievable

adjective
невероятный