A case that "converts the wasted 90 percent of energy the phone produces trying to pump out a cellphone signal, and puts it back into the phone, thus powering it for up to 30 percent longer"? Maybe next they'll build an alternator equipped trailer that you can tow behind a Model S, that will convert 90 percent of the kinetic energy the car produces trying to move the car forward, and put it back in he car, thus powering it for up to 30 percent longer!
:wink: