Traditional fluid-coupling automatics are not the only ones on the market. A lot of cars now have dual-clutch automatics, and there are others that combine a fl

Traditional fluid-coupling automatics are not the only ones on the market. A lot of cars now have dual-clutch automatics, and there are others that combine a fluid coupling with a computer-controlled clutch. Fuel economy tests in many different countries have confirmed that automatic transmission can indeed be more efficient than the manual transmission in the same car.