Program cartel developed is retail vehicle? (9)
I believe the answer is:
applecart
'retail vehicle?' is the definition.
'applecart' can be an answer for 'vehicle?' (applecart is a kind of vehicle). I am not certain of the 'retail' bit.
'program cartel developed' is the wordplay.
'program' becomes 'app' (type of computer program).
'developed' indicates anagramming the letters.
'cartel' is an anagram of 'lecart'.
'app'+'lecart'='APPLECART'
'is' is the link.
Can you help me to learn more?
(Other definitions for applecart that I've seen before include "this could be upset" , "Upset this fruit conveyance to spoil plans" , "It gets upset" , "To upset this is to throw plans into confusion" , "Upset this fruit carrier to spoil plans" .)