Dump truck, not garbage truck. This one is transporting rock from a mine to a cement plant. It does not transport garbage. The mine is just on a mountain.
But that was going to happen anyways. Today, a dump truck spends energy going downhill by burning fuel and brakes that it doesn't need to if it's electric.
Doesn't expend much energy going downhill. Engine is probably idling and diesels idle efficiently. But, it's not recovering any energy, which is the big win with the electric truck.
I wonder if someone could come up with a more direct way of converting tectonic drift into electricity. The total amount of energy available would be stupendous, but there seems to be a problem with it being low-density from being spread over such a large area.
Again, trash is not involved.