Just throwing a random idea out there. We can be more efficient in powering our vehicles. I know many will post blogs about adding efficiency to vehicles, but I'm sure that not too many people have thought of this:
Imagine the spinners on your car powering your car. When a car stops, the rims on a car with spinners will continue spinning, because of the momentum of the rims. Fortunately, that momentum of the rims can be used for energy. Little turbines on each wheel can generate energy from the spinning of the rims, which can be diverted to the engine of the car (let's hope it's an electric car, too).
Using spinning rims on cars for energy, we can reduce the amount of energy expended, seeing as each stop amounts to a small boost in power, thus resulting in less need for refueling or recharging.
Have a nice day :)