Safety device could make car heat up (9)
I believe the answer is:
parachute
'safety device' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'make car heat up' is the wordplay.
'make' is an anagram indicator.
'car'+'heat'+'up'='carheatup'
'carheatup' with letters rearranged gives 'PARACHUTE'.
'could' acts as a link.
Can you help me to learn more?
(Other definitions for parachute that I've seen before include "Equipment to break a fall from the sky" , "It breaks a fall from the sky" , "Drop from plane" , "Equipment for making a descent from an airplane" , "canopy" .)