gari kama hizo lazma ziko na onboard computers ambazo zinacontrol everything from engine power, traction control systems, active suspension(electronic shock absorbers)... so its safe to presume they have to notify the user about the power consumption.... ata labda pia inaeza kwambia what devicea or aystems use the most power if you want details... the dashboard screen probably not only shows you how much charge is left but also what distance it will cover in an average constant speed before it completely runs out.... if you in the west it will probably be connected to a navigation system to direct you to the nearest charging station
