Picture that is capturing adult in sports car (5)
I believe the answer is:
image
'picture' is the definition.
(synonyms)
'capturing adult in sports car' is the wordplay.
'capturing' means one lot of letters goes inside another.
'adult' becomes 'a' (abbreviation).
'in' indicates putting letters inside.
'sports' becomes 'ie' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'car' becomes 'mg'.
'ie' enclosing 'mg' is 'imge'.
'a' going inside 'imge' is 'IMAGE'.
'that is' is the link.
Can you help me to learn more?
(Other definitions for image that I've seen before include "Likeness or mental picture" , "Public impression" , "Likeness; metaphor" , "Reflection" , "Mental picture; metaphor" .)