Yes, someone recently told me about a UP consist 15k feet long, and while they had DPUs middle and back, they burnt up the lead unit heading up a grade. Hard to see how they think they are saving money if they are burning up their power units. Having said that, after driving through Nebraska where most of the freeway driving is getting stuck behind trucks passing trucks, I was wishing UP would assemble some REALLY long consists of truck trailers and clear the freeway a bit!