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>Adding electric motors and a battery to diesel trains JUST for carbon capture seems foolish.

There's no such thing as a train propelled by a diesel engine.

All "diesel trains" are diesel-electric. They use electric motors for propulsion, and for braking as well. Normally, there's a big resistive grid on the roof where the power is dumped.

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That's categorically untrue. Diesel-electric trains are not uncommon, but there are many, many trains driven directly mechanically or hydraulically by the diesel engines.

Nearly rode on one these just yesterday: https://en.m.wikipedia.org/wiki/British_Rail_Class_150

I stand corrected: some really backwards countries still have crappy old trains that run purely on diesel.

In America, all the freight trains and diesel passenger trains are diesel-electric, and have been for many decades. And America isn't even much of a leader in passenger rail.

I guess I shouldn't be too surprised about the UK; this is a country that still doesn't know how to make a single water faucet that combines hot and cold water.

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