3440 Great Western Railway Steam 4-4-0 at Toddington, United Kingdom by Graham Williams. A view at the Glocs Warks Spring Gala in 2009. GWR Number 3440 City of Truro was designed by G.J.Churchward and built in 1903. It is one of the contenders for the first steam locomotive to travel over 100 miles per hour. Its maximum speed has been the subject of much debate over the years.