He goes by motorway for miles (3)
I believe the answer is:
les
'he' is the definition.
'by motorway for miles' is the wordplay.
'LES' is hidden within the letters.
However, I'm uncertain how the hidden word is indicated.
'goes' acts as a link.
Can you help me to learn more?
(Other definitions for les that I've seen before include "French definite article" , "French article; name" , "- Dawson, Br. comedian" , "Short boy or girl" , "-- Dawson (late comedian)" .)