International campaign to evaluate vehicle (4-5)
I believe the answer is:
test drive
'evaluate vehicle' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'international campaign' is the wordplay.
'international' becomes 'test' (as in a test match in cricket).
'campaign' becomes 'drive' (drive can mean a campaign or initiative).
'test'+'drive'='TEST-DRIVE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for test drive that I've seen before include "Trial run" , "Evaluate performance" , "Assess performance" , "Evaluate jeep, say" , "Shot" .)