Elvis' car mania is instinctive (8)
I believe the answer is:
visceral
'instinctive' is the definition.
(I've seen this before)
'elvis' car mania' is the wordplay.
'elvis' car' can be anagrammed to 'VISCERAL'.
But, I'm not sure how the anagram is indicated.
'is' is the link.
Can you help me to learn more?
(Other definitions for visceral that I've seen before include "Relating to the guts" , "(As an adjective) gut" , "Like the gut feelings" , "Relating to internal organs of the body" , "Intuitive rather than cerebral" .)