Complex sentence: These 6-axle hood unit road switchers were produced as both 1,600 and 2,400 horsepower (1.8 MW) variants, and were the successor to the ultimately unsuccessful Consolidated line of cab units produced by F-M and CLC in the 1950s.
Split into simpler sentences: These 6-axle hood unit road switchers were produced as both 1,600 and 2,400 horsepower (1.8 MW) variants. These units were the successor to the ultimately unsuccessful Consolidated line of cab units produced by F-M and CLC in the 1950s.