It's obvious the French get in the vehicle (5)
I believe the answer is:
clear
'it's obvious' is the definition.
(similar in meaning)
'the french get in the vehicle' is the wordplay.
'the french' becomes 'le' ('the' in French).
'get in' is an insertion indicator.
'the vehicle' becomes 'car' (car is a kind of vehicle).
'le' going into 'car' is 'CLEAR'.
(Other definitions for clear that I've seen before include "Jump over without contact" , "Exculpate" , "Obvious; remove obstructions from" , "Obvious; jump over" , "Patent" .)