Just came across this interesting image and links in the comments:
https://www.flickr.com/photos/nlireland/5736907701/in/photostream/"Members of the Railway Protection Repair and Maintenance Corps at Inchicore Works, Dublin, converting Lancia Armoured Cars for use on railways. This work was carried on between 1921 and 1923. Over 50 original open top Lancia Armoured Cars were converted at Inchicore, but only seven were converted to rail cars. The road or highway version of the Lancias converted at Inchicore were used by the Irish army until the Second World War, and were known as the ''Hooded Terrors''. No Lancia rail cars survive, although one was kept in a siding at Inchicore until the 1950s."
This was during the Civil War in Ireland where Railway infrastructure was often attacked.
Willo