Por sua vez, as CC 21000 tinham 5.900 kW de potência, podiam circular a 220 km/h, mas possuíam um maior empatamento, bogies bi-redução – desperdiçados em comboios de passageiros – caros de manter e mais 37 t (!) de peso que as BB 15000.
Then it comes to be that the soothing light at the end of your tunnel
Is just a freight train coming your way
Em adição ao artigo, e a um eventual porquê da escolha CC21000 e não da BB15000
In 1977 BB15041 drove special demonstration rides between Épernay and Châlons-sur-Marne at 200 km/h (120 mph) for Amtrak executives, in order to convince them to buy a locomotive based on this design rather than the Swedish-based AEM-7. Eventually six-axle locomotive CC21003 was rebuilt to US standards and sent to the United States instead.