The word quicker means that something moves further in a given time than something else, or takes less time to cover a fixed distance than something else.It's just a word description. Lots of words are not physical. The car doesn't know it is quicker, it's a human concept. Maybe I should change the words to something that really happens... the car travels a shorter distance, and the Aether catches up with it when it stops.
Both descriptions involve time.
It's okay to say you'll change the word but you're gonna find it bloody hard to get any meaning without time in there somewhere.
If there's no time then everything must move at the same rate, there can be no relative movement.