Model in sports car going under bridge (9)
I believe the answer is:
archetype
'model' is the definition.
(I know that archetype is a type of model)
'sports car going under bridge' is the wordplay.
'sports car' becomes 'E-type' (type of Jaguar car).
'going under' means one lot of letters go next to another.
'bridge' becomes 'arch' (I've seen this before).
'etype' put after 'arch' is 'ARCHETYPE'.
'in' acts as a link.
(Other definitions for archetype that I've seen before include "Original pattern or model" , "They caper about like original model" , "Very characteristic example" , "Model - perfect specimen" , "Very typical example" .)