One car coming in light shades not familiar to the locals (8)
I believe the answer is:
visitors
'light shades not familiar to the locals' is the definition.
I can't tell whether this defines the answer.
'one car coming in' is the wordplay.
'one' becomes 'i' (Roman numeral).
'car' becomes 't'.
'coming' becomes 'visors' (I can't explain this - if you can you should believe this answer much more).
'in' means one lot of letters goes inside another.
'i'+'t'='it'
'it' going into 'visors' is 'VISITORS'.
Can you help me to learn more?
(Other definitions for visitors that I've seen before include "Callers or tourists" , "away team" , "They come to call, or holiday makers" , "Holiday-makers or guests" , "'Callers, guests (8)'" .)