GM2210104 Class 66 793 Railfreight Construction Diesel LocomotiveThe Class 66 is a type of six axle diesel electric freight locomotive developed in part from the Class 59, for use on the railways of the UK. Since its introduction the class has been successful and has been sold to British and other European railway companies. After reviewing the existing privately commissioned Class 59, which was more powerful, highly reliable and with lower operating costs, EWS approached its builder Electro Motive Diesel (EMD),