low maintenance only has 1 moving part to the engine. compared to the 100's in a combustion engine.
True
no oil, only consumable in the engine would be brushes
+1. I love petrols but they are so bloody wasteful. They have to have cold air routed round and into the cylinders, pistons, cams, crank anything that weighs something is costing energy to move. After all that most of the energy is wasted as sound or heat.