The caduceus with two winged intertwined serpents is oftentimes mistaken as the symbol of medical practitioners, however it is the Rod of Asclepius with a snake wrapped around the deworming rod, which represents the healing arts. The caduceus belonged to Hermes, the god of trade, travelers & tricksters, and was put into use as a symbol by American hospital stewards responsible for managing hospital staff and medical records in the mid-1800's. An argument could be made for the use of the caduceus in an administrative capacity as a symbol of commerce, although at the time it was not the justification for its use.
"Here in the U.S., the first successful electric car made its debut around 1890 thanks to William Morrison, a chemist who lived in Des Moines, Iowa. His six-passenger vehicle capable of a top speed of 14 miles per hour was little more than an electrified wagon, but it helped spark interest in electric vehicles." It's really too bad they didn't catch on until the next century! Think of all the savings...