MIT examines reality of slashing vehicle fuel use

 "If our goal is to achieve deep, long-term reductions in fuel use and emissions we should do all these things--increase the ERFC, improve today's engines, increase the market penetration rate of advanced propulsion technologies and find ways to reduce the rate of growth in demand. With that combination we can get very deep cuts by 2035," Bandivadekar said. "To make those things happen, we need strong, long-term policies and we need to adopt them now because the longer we wait the higher the starting point is and the more difficult the task."