Econav will not just help you find your destination while you are driving your car,this hi-tech device could save you petrol and the planet as well. Econav prevents you when you accelerate and brake too harshly, it flashes when you need to shift gear according to speed. Navigation makers Vexia claims that this will reduce co2 emissions by 30%. This Idea seems to be very clever, however the public will decide when it hits the market.
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