[Google Fast Flip] ‘Road trains’ get ready to roll
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‘Road trains’ get ready to roll
The driver’s sat-nav indicates that there is a road train ahead that is following some of his/her planned journey. The driver approaches the road train, which is controlled by a professional driver at the front, and indicates that he/she wishes to join. The road train takes control of the extra car, pulling it close to cut air drag and save about 20% BBC News 'Road trains’ get ready to roll…
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