The inevitable torque losses of an automatic transmission are eliminated with the dual - clutch transmission, since it operates with the high level of efficiency of a mechanical transmission. (greencarcongress.com)
This reaction therefore increases the capacity of the muscles to do work improving energy efficiency of muscles. (fitness-baron.com)
We should have seen a slow and steady increase in fuel efficiency in the last hundred years, but that just hasn't happened, and I don't understand it. (treehugger.com)