Lego Trains is a Lego theme seen for the first time in 1966. It doesn't count as a Long Runner as much as LEGO City, however, as it has been completely redesigned several times. * The first trains from 1966 had either no motor at all or a 4.5V motor fed by three C-cell batteries on the locomotive itself. The rails were blue, and the sleepers were white. * 1969 brought magnetic couplers and the 12V system with a pair of electric rails in the middle of the track. Lego trains could finally be remote-controlled like real model trains. * 1980 saw a major theme reboot and the transition from the Blue Era to the Gray Era. There were still unmotorized, 4.5V (with the batteries in a separate car since 1972) and 12V trains, but first of all, the rails were gray, and the sleepers were dark