It's hard to say. Even before automobiles we had penny farthings and early bicycles, before that we had handcarts, and before even that we had animal-driven wagons. Likewise before electrification, humans were already using water power in the form of water wheels for everything from sawing wood to grinding flour. When I look back at history, I realize that humans have been innovating for millenia, so it's really hard to say if one thing was more "innovative" than another.
