Don’t you wish you could take your hands of the steering while during those pesky traffic jams? Well, if the “road train” concept becomes a reality, you might just be able to do it, and save fuel in the process. The system is quite simple: The cars will all follow the “leader” of the train, and if you want to join in, the sensor will send out the signal, and your car will obediently follow the train, and stay close enough so that you could save some fuel by being in the slipstream. When it’s time for you to pull off in another direction, just disengage, and the system will widen the gap between the cars, allowing you to leave the pack, after which the car previously behind you will be linked to the car in front of you. Pretty neat, isn’t it?

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