It’s faster with a motor (7)
I believe the answer is:
scooter
'motor' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for scooter that I've seen before include "Two-wheeler" , "Motorised bike" , "Vehicle and child's toy" , "Small motorcycle" , "To score (anag)" .)