This is a container clue - one word or set of letters goes inside another word. Look for an indicator that suggests something being put inside or included.
'Includes' is the container indicator. Put ME (meaning 'compiler' - the person writing the clue) inside 'motor', then add A at the end.
Answer: CAMERA | ME ('compiler') goes inside CAR ('motor') to make CARME, then add A to get CAMERA (recording device).