In 2007 the railway operator Fesur was established. To develop its activity, commissioned to CAF the construction of nine locomotives Bitrac. When locomotives were built, we were in 2009 with the economic crisis in full swing so Fesur never started business as a railway operator and the nine locomotives were abandoned in Irun, Alsasua and Linares. Fortunately, in recent years the company COMSA has gradually been renting some of these locomotives and currently has six of these locomotives Bitrac with dual traction. The 601,003 has been the latest addition and this was its first serve, a steel train Santurce-Aranda-Santurce. It really is a practically new locomotive as it only had 1000 kilometers the day before this first service.