why do trains have to stop at ever station.. what if this way of switching cars could let the train roll on, not stop, saving energy and riders time? You On Here » innovation , Train » why do trains have to stop at ever station.. what if this way of switching cars could let the train roll on, not stop, saving energy and riders time?

Just skip to the 35 second mark and watch it to the 50 second mark, you'll get the idea without ever listening to a word of it, or wasting any time
found on http://www.bookofjoe.com/2010/12/26/index.html

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