Let’s look at another more current example . A car. The truth is that I don’t understand much but Iever found yourself in this situation? What decision would you  think that with the same force of the engine the fans for the air CH Leads conditioning are powered, the battery is recharged, power is generated for the radio and even the wheels move. TRUE? That is! You’re getting it now. With almost the same energy expenditure as its main function (making the wheels turn), the car is capable of doing many other parallel things such as cooling the cabin, recharging the battery or making the ramones sound at full blast.