Drivers of fuel-injection system cars can use the Eco-Nav GPS to save from 15% fuel consumption. The system gives recommendations to the drivers of a manual gear car on how best to drive at a given time in order to minimise emissions. Translated into Euros, a driver who covers 2000km per month could see a saving of 500€ annually on fuel alone if they were to drive according to the improvements suggested by the Eco-Nav. Personally, I’d be surprised if any Spaniard were to invest in a front-seat / backseat driver like this, but hey, I could be wrong! http://www.econav.es/
