 Products of this competition were the LMS and LNER races to Scotland, with the famous Flying Scotsman service and LNER's "Mallard" setting a world speed record of 126 mph, the LMS's production of diesel railcars, electrification of lines by the LNER, the GWR's ingenious marketing and the SR's mass electrification scheme, which led to nearly the whole of the south east's trains being electric.Many claimed Britain had the best railways in the world at this period, and it could certainly be justified.Road transport grew rapidly during the 1920s, stimulated by the cheap sale of thousands of war-surplus vans and lorries and the subsidised construction of new roads, which was mainly funded by local authorities.