Nissan accelerator pedal pushes back to save fuel For drivers who like to step on the gas but don't want a higher fuel bill, Nissan Motor on Monday unveiled an accelerator pedal that pushes back to help motorists get more mileage. Nissan's "Eco Pedal" system is the latest salvo in the fight between automakers to woo customers with technology that reduces fuel consumption. The pedal automatically pushes back on the foot when the system detects too much pressure on the accelerator, informing the driver that he or she is using more fuel than required, Nissan said. An eco-driving indicator fitted...