4 Tesla passengers survived a 250-foot plunge down a cliff called Devil's Slide

• A Tesla plunged down a 250-foot cliff called Devil's Slide on Monday, Cal Fire said.

• A rescuer told Fox News it was "nothing short of a miracle" the four passengers survived the crash.

• The cause of the incident hasn't yet been reported.

Four Tesla passengers survived a 250-foot drop off a cliff known as Devil's Slide on Monday, according to Cal Fire.

A Tesla that was carrying two adults and two minors plunged down the cliff on Monday morning, Cal Fire's San Mateo branch reported. An official at the scene said the children in the vehicle were 4 and 9, per KRON4 in San Francisco, though the identities of the passengers haven't been revealed.

The four passengers were rescued from the vehicle via helicopter, Cal Fire said. The passengers had been in the car for more than an hour, ABC News reported.

The car was traveling south along California's Highway 1 near the Tom Lantos Tunnels, Cal Fire said. The highway runs along the state's coast.

Brock Sommerset, a man claiming to be part of the rescue party, shared a video that appears to show the rescue mission.

Representatives for Cal Fire and the San Mateo sheriff's office didn't respond to a request for comment ahead of publication.

The San Mateo sheriff's office told NBC the two children were uninjured. The two adults were in critical condition upon recovery but were later found to have suffered non-life-threatening injuries, per NBC.

Robin Johnson, who said she witnessed of the crash, told NBC she saw the Tesla "driving extremely fast" toward an exit on California Highway 1 before the electric car went "over the edge and straight down" the cliff. It is unclear whether the car was using Tesla Autopilot, the automaker's driver-assist system.

Brian Pottenger, the battalion chief of the Coastside Fire Protection District, told Fox News it was remarkable the passengers had survived the 250-foot fall.

"We come out here, unfortunately, all too often for things like this," he said. "And this, this was nothing short of a miracle that they survived."

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