https://www.cnet.com/roadshow/news/elon-musk-tesla-roadster-space-car/

The Lunar Roving Vehicle, aka Lunar Rover, aka Moon Buggy, was a highly specialized electric vehicle designed to traverse the lunar surface with two astronauts, their gear and scientific samples aboard. The suspension, wheels and motors were developed by General Motors Defense Research facility in Santa Barbara, California and the rest was designed by Boeing in Seattle. Assembly took place in Huntsville, Alabama by Boeing.

The Moon Buggy was built as a joint effort between GM and Boeing.