 An attempt at a cheap DMU replacement was made with the Pacer—essentially a modified bus body mounted on a rigid 4-wheel freight wagon chassis—which met with customer dissatisfaction.However, more successful stock such as the Sprinter DMU, the Networker DMUs, and EMUs were introduced.To considerable surprise, the Thatcher government, which had been perceived as anti-rail, authorized the electrification of the East Coast Main Line including the line from Doncaster to Leeds from 1985, with the work completed in 1991.