The 1942 Oeuf électrique, or electric egg, had three wheels and ran on batteries decades after gasoline became the dominant way to power cars, and decades before Elon Musk decided to make electricity cool again. Its designer, Parisian Paul Arzens, worked as a painter and designed railway locomotives before moving on to cars. The bubble is made of hand-formed aluminum and curved Plexiglass, a novel material at the time.