Does it provide but little transportation? (7)
I believe the answer is:
minibus
'does it provide' is the definition.
I can't tell whether this definition defines the answer.
'little transportation?' is the wordplay.
'little' becomes 'mini'.
'transportation?' becomes 'bus' (I can't justify this - if you can you should give a lot more credence to this answer).
'mini'+'bus'='MINIBUS'
'but' acts as a link.
Can you help me to learn more?
(Other definitions for minibus that I've seen before include "Small coach" , "form of transport" , "transport for children?" , "Vehicle for up to, say, 15 passengers" , "Small multi-seater vehicle" .)