A university drunkard driven back in cars (5)
I believe the answer is:
autos
'driven back in cars' is the definition.
'autos' can be an answer for 'cars' ('auto' can be a synonym of 'car'). I'm not sure about the 'driven back in' bit.
'a university drunkard' is the wordplay.
'university' becomes 'u' (abbreviation for university).
'drunkard' becomes 'tos' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a'+'u'+'tos'='AUTOS'
Can you help me to learn more?
(Other definitions for autos that I've seen before include "Freeway traffic" , "Religious dramas" , "Cars" .)