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I think freight trains in Europe are much faster than in the US, but also much shorter (though there are plans to make them a little longer) and lighter (no double-stacked containers). So they are more costly but you get stuff from A to B faster.

Electrified locomotives are better than diesel electric (e.g. an electric locomotive has 2x - 3x the power, ~6MW-9MW compared to ~3MW, so you need less locomotives, less moving parts means less maintenance etc.), but while it works in dense Europe, it's too costly to build and maintain cross US.

it's probably too expensive for some of the country (mainly the great plains etc), but on the west coast and east of the Mississippi there's definitely the density to support it.

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