LNER Class A4
The Class A4 is a class of streamlined 4-6-2 steam locomotive designed by Nigel Gresley for the London and North Eastern Railway in 1935. Their streamlined design gave them high-speed capability as well as making them instantly recognisable, and one of the class, 4468 "Mallard", holds the world record as the fastest steam locomotive. Thirty-five of the class were built to haul express passenger trains on the East Coast Main Line route from London Kings Cross via York to Newcastle, and later via Newcastle to Edinburgh, Scotland. They remained in service on the East Coast Main Line until the early 1960s when they were replaced by Deltic diesel locomotives. Several A4s saw out their remaining days until 1966 in Scotland, particularly on the Aberdeen - Glasgow express trains, for which they were used to improve the timing from 3.5 to 3 hours.
HŽ series 1142
They were manufactured by the Končar factory (named after Rade Končar). Originally, they were a Yugoslav development (class 442), meant to be used in 80s as the fastest electrical powered locomotive. They remain the fastest Croatian locomotives today. At that time, as higher speeds became more and more important, former Yugoslav Railways () needed a locomotive, which could cope with the 160 km/h speed reachable on some of the mainlines. Therefore, this series was produced. It was planned that some of this units would be delivered throughout the then still existing SFRY. The dissolution stopped these plans, leaving HŽ as the only company, which has this class, from all the former SFRY states.