Maintenance Car 04/22 was one of many golf-cart type maintenance vehicles employed on Isla Nublar, and the only one mentioned. In the novel, Alan discovers an infant velociraptor near this car and sedates it. As the name implies, it is located inside Maintenance Building 04, the entrance to which is hidden behind a waterfall. In Jurassic Park, Alan Grant discovers the car charging inside the building.
- The car was stampted with 'MAINT 04/22', and the name means its Maintenance Car 04 (named after where it was stationed) out of 22 total made cars.