The story
Rudolf Egg, an automotive engineer, built a car for his own use in 1893. He later founded the namesake company in 1896 in Zürich with funds from a Swiss banker called Egli. In 1904, the company moved to Wollishofen, operating under the name Motorwagenfabrik Excelsior. Egg's company later produced some of the first Swiss aircraft engines. Financial difficulties after the war forced the closure of the business in 1919. Egg himself later became a Renault dealer.
From Wikipedia’s article on Egg (car), shared under CC BY-SA 4.0.3