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Re:Self-driving truck convoy completes its first major journ... by chinathrow on Saturday April 09, 2016 @08:35AM (#11460994)
Yes, trains exist.

What the mentioned platooning achieves though, is rapid re-grouping once a truck joins or leaves the platoon. Imagine that you save 10-20% of fuel within a platoon (as pointed out in the article), then precise scheduling entering the highway at the right time makes suddenly sense.

Trains can't do that with the same flexibility.

Re:Self-driving truck convoy completes its first major journ... by revelation on Saturday April 09, 2016 @09:26AM (#11461120)
Fuel consumption is about the last thing you want to bring to the fore when comparing trucks to trains. You could take all the diesel in a truck, burn it in a oil power plant and use the generated electricity to power a train. You would go much further.
Re:Self-driving truck convoy completes its first major journ... by chinathrow on Saturday April 09, 2016 @09:37AM (#11461154)
I only compared the ability of those truck platoons to re-group dynamically to those of trains.