Talgo II coaches and locomotives were first built in 1950 at the American Car and Foundry Company (ACF) works in the United States under the direction of Spanish engineers (the diesel-electric locomotives were assembled by ACF with electrical components made by General Electric). Talgo II carried most of the Jet Rocket train’s passengers between Chicago and Peoria, Illinois, after entering service on the Chicago, Rock Island and Pacific Railroad (the Rock Island line) in 1956. Slightly different coaches were later introduced, and the last car type of the Jet Rocket resembled that of the future Talgo III. The New York Central Railroad trialed a complete train until 1958 but saw little success.

Talgo IIs also entered service under Renfe as the Renfe Class 350, where they ran between Madrid and Palencia.

Talgo IIs were also built for the New York, New Haven and Hartford Railroad for its “John Quincy Adams” train from New York City to Boston, Massachusetts, and the Boston and Maine Railroad for its “Speed Merchant” train, running between Boston and Portland, Maine. Soon afterwards, Talgo II trains began running in Spain and were successfully operated until 1972.

ACF Industries, originally the American Car and Foundry Company (abbreviated as ACF), is an American manufacturer of railroad rolling stock. One of its subsidiaries was once (1925–54) a manufacturer of motor coaches and trolley coaches under the brand names of (first) ACF and (later) ACF-Brill. Today, the company is known as ACF Industries LLC and is based in St. Charles, Missouri.

It is owned by investor Carl Icahn.

Talgo (officially Patentes Talgo, SAU) is a Spanish manufacturer of intercity, standard, and high-speed passenger trains. Talgo is an abbreviation of Tren Articulado Ligero Goicoechea Oriol (English: Lightweight articulated train Goicoechea Oriol)

The company was founded by Alejandro Goicoechea and José Luis Oriol. It was first incorporated in 1942.

The creation of Talgo can be largely credited to the work of two individuals, Alejandro Goicoechea and José Luis Oriol. During the 1930s, Goicoechea, a pioneering railway engineer, sought to produce a new generation of rolling stock that would be primarily composed of metal, rather than wood; to reduce operational cost, he also emphasised lightweight yet sturdy construction, while a low center of gravity would deter derailing and thus permit higher operating speeds. In 1942, financial backing for the construction of a prototype train was provided by Oriol, which believed in Goicoechea’s concepts. The two produced the agreement that established Patentes Talgo as a company that same year. The prototype train would emerge as the Talgo I.

Read more: History of railways with Alex Meltos ...