Funny to once more experience how public emotions about looks of traction guided answers. Have just been writing about the RENFE 278 and the NS 1200 and how they were developed from the Pennsylvania Railroad post-war electric test locomotives E2c and E3b. Adhesion from heavy weight and a lot of axles is far better used for freight in the USA, where in Europe and Japan traction control electronics play a big role in this line of work and this is where notably the class 278 Panchorgues in Spain had a problem. On the other side: remember the Amtrak E60 and SPD40F derailments to see how US builders got it desperately wrong and turned to European traction manufacturers for the Northeast Corridor services. Indeed: the demands for either speed or heavy haul specify what a loco will do, it can't do both.