A tree fell on a car in Rock Creek Park on Monday, Aug. 29, 2016. (Michael Durr)

A tree fell on a car on Beach Drive NW in Rock Creek Park during the Monday afternoon rush, trapping a man inside, and police corralled onlookers to lift the tree off.

Michael Durr said he was commuting on his bicycle from downtown and was near the Duke Ellington Bridge (also called the Calvert Street Bridge) when he saw police around the car calling on people to pitch in and help lift the tree off it.

“I didn’t think we could lift it up,” Durr said.

Durr said police and about 30 bystanders were able to lift the tree and push the car out from under it.

The car had been “flattened,” Durr said, but the wheels still worked, and the person inside was shouting.

A tree fell on a car during afternoon rush hour on Aug. 29 in Rock Creek Park in Northwest Washington. Police rescued the driver trapped inside. (WUSA)

“You could hear him,” Durr said. “He was not good.”

A U.S. Park Police spokeswoman, Sgt. Anna Rose, said the man was transported to a hospital with serious injuries. Information about the victim’s identity was not available.

Eben Burnham-Snyder, another bike commuter on the scene, said that the car was a Toyota Camry with Maryland license plates.

Burnham-Snyder said the tree was two or three feet in diameter, and had fallen on the windshield.

“I can’t think of time in my life when I’ve come up on a more random accident than that,” Burnham-Snyder said.