 Boxcabs do not have heavily styled ends, or a superstructure consisting of multiple boxy structures, although the prototype diesel/oil-electric, GE #8835, had one prominently-rounded nose (from its trolley (tram) car ancestry) and the second and following 100-ton ALCO boxcabs had semi-cylindrical ends.The construction of double-ended (and a small number of single-ended) boxcab diesel locomotives was common in Australia from 1969 until the 1980s.These were mainly GM-EMD derivatives built by Clyde Engineering with a smaller number of Alco derivatives built by A. E. Goodwin/Commonwealth Engineering and GE derivatives by A. Goninan & Co/UGL Rail.