Raids where cars may be found? (7)
I believe the answer is:
inroads
'raids' is the definition.
(inroad can mean a raid or attack)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for inroads that I've seen before include "large quantities consumed when these are made" , "Encroachments" , "Hostile attacks" , "Making them is reductive" , "Ordains as offensives" .)