The new Econav satnav can’t make calls like Garmin-Asus’ M20 Nüvifone can, but maker Vexia has promised that its navigation device will help cut your carbon emissions. Econav_430 Lexia's Econav: helps reduce petrol consumption and carbon output Described as the world’s first ecological GPS, Econav tells its user in real time …
My Magellan 4370 has economical mode....
Just select "walking" you'll save lots of gas.
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