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Highiron, you wrote "if a coupler failed, the cars would end up down in L.A." I've been on the Cajon pass. They would end up in San Bernadino.....hehehe. But seriousely, if a drawbar/knuckle broke, the cars would go into emergency and stop. I live at the bottom of two grades traversed by quite a few trucks and nearly every time that I get out on the road, there are at least one truck or more stopped with smoke billowing off of the wheel area. Too common! We just had a runaway a few days ago and they are not uncommon. <br />As far as effeciency goes, trains have trucks beat hands down. Consider horsepower per ton. A figure that is very important to the RR. We often run as little as 1 HPT on the flatter runs. Correct me if I'm wrong, but, aren't the newer semis pushing 500 hp? and hauling around 50 tons? If so that equates to 10 hpt to move that freight. Our most powered up trains on steep grades rarely use even half of that. Food for thought.
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