RailAdventure’s ES64U4 electric, which the company acquired last year from mgw Service, running in the Czech Republic. The machine was acquired in 2019 for exactly this purpose: making it possible for the interim railway operator to transport rolling stock in Hungary, Slovakia, Czech Republic, and Poland using its own locomotive.
As an example, 183 500 can pick up rolling stock returning after completing a test program at the VUZ Velim test center: