This is the 1003rd most frequent German word.
geschwindigkeit
Speed; velocity.
The term 'Geschwindigkeit' here is used to describe the rate at which the car moves, measured quantitatively.
Die Geschwindigkeit des Autos war beeindruckend.
The speed of the car was impressive.
Here, 'Geschwindigkeit' is used to indicate the pace or velocity of the driver, implying a change for safety.
Er reduzierte seine Geschwindigkeit, um sicher zu fahren.
He reduced his speed to drive safely.
In this example, 'Geschwindigkeit' refers to the rapidity or rate of the Internet's growth, abstractly describing development pace.