Book some Italians taking horses across motorway (6)
I believe the answer is:
romans
'book some italians' is the definition.
'romans' can be an answer for 'book' (I've seen this before). I am unsure of the 'some italians' bit.
'horses across motorway' is the wordplay.
'horses' becomes 'roans' (roan is a kind of horse).
'across' is an insertion indicator.
'motorway' becomes 'M' (as in motorway names - Mr, Mn etc).
'roans' going around 'm' is 'ROMANS'.
'taking' is the link.
Can you help me to learn more?
(Other definitions for romans that I've seen before include "Ancient Italians" , "Classical Italians" , "Countrymen of Mark Antony" , "Mark Antony's countrymen?" , "Inhabitants of Italy's capital" .)