An online record shows it was a one-alarm fire involving three engine companies, which generally means about 15 firefighters from the Menlo Park Fire Protection District.
Calls to the fire district were not returned in time for publication.
Medics treated one tenant for a minor case of smoke inhalation, the tenant said. There were no other injuries and the building is still inhabited, the tenant said.
Firefighters had the flames under control in about 10 minutes and continued to douse the vehicle for another 30 or 40 minutes, the tenant said, adding: "It just kept smoking."
The tenant, who arrived first on the scene, told The Almanac of an attempt to put the fire out with a portable fire extinguisher.
"My face was just burning," the tenant said. "We might have bought 30 seconds. The burning was just unbelievable."