CALIFORNIA, United States (AFP) — Researchers at the University of California, Riverside have created a computer program for plug-in hybrid electric vehicles (PHEVs) that learns how to save fuel, improving fuel efficiency by more than 30 percent. PHEVs can use either gasoline or electric power. Lab tests have shown the most efficient way for them to run is to switch between power from the battery and gas throughout the trip, rather than running exclusively on […]