Clothes for driving in? (4)
I believe the answer is:
gear
'clothes' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for gear that I've seen before include "Toothed wheel which engages with another one" , "Equipment - changed in the car?" , "Effects" , "Outfit - equipment - changed on inclination?" , "Toothed wheel mechanism" .)