Why doesnt everything create energy?

Fluxxlab has created a revolving door called the Revolution Door that can redistribute energy from people using it.

This is smart. We should just start designing everything to convert whatever it does into energy. The fridge charges when the door is opened, doors in houses power the lights, an exercise machine gives off power. All treadmills should do that, they should be independently powered at least...

side note: not a fan of treadmills.

another side note:
i cant decide if i would rather have a 1968 dodge charger rt or a 1967 pontiac gto.


charger.