A change in an operating mode of an automatic transmission (mode D) for fuel conservation in internal combustion engines. The backbone of the idea is not to use the car's engine when there's no need. This means that the engine is automatically put into idling mode when the car is in no need of propulsion power: 1. Free-wheeling - when the driver releases gas-pedal but hasn't yet pushed the break-pedal, which is especially effective in traffic jams. 2. When the car is rolling...