Takes courage to cuddle in a traffic jam (10)
I believe the answer is:
bottleneck
'a traffic jam' is the definition.
(I've seen this before)
'takes courage to cuddle' is the wordplay.
I cannot quite understand how this works, but
'courage' could be 'bottle' (bottle can mean courage) and 'bottle' is present in the answer.
The remaining letters 'neck' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for bottleneck that I've seen before include "Part of glass container" , "Constricted place" , "Where traffic is squeezed" , "hold-up situation" , "Traffic restriction" .)