"It's just crazy to see something like this. It's just unbelievable," said witness Rob Castro.
The Alameda County Fire Department tweeted this video of the plane:
Firefighters & @CHPcastrovalley at the scene of an aircraft emergency landing on WB I-580 near the 164th Ave exit in unincorporated San Leandro. Pilot & passenger are ok, no injuries. No injuries to bystanders or vehicles. No damage to plane or freeway. Cause under investigation pic.twitter.com/ZhRJXxPk5h— Alameda County Fire (@AlamedaCoFire) August 12, 2018
At 6:46 p.m. on Saturday a man and a woman who was his passenger made an emergency landing.
The pilot told the California Highway Patrol that the fuel line snapped and caused the plane to lose pressure.
VIDEO: Car dashcam catches small plane landing on San Leandro freeway
ABC7 News caught a glimpse of the plane:
Neighbors told ABC7 News they heard just that before witnessing the bizarre landing.
"It was like, boom, like, a car was going out of gas or something," said neighbor Michelle Williams. "Then it hit the ground and all I can do was just run and scream and say, 'A plane is on our freeway!'"
CHP Sgt. Michael Novosel said he's never seen anything like it.
The agency released aerial footage of the aircraft near the right lanes.
"Not every day, it's a first in my career," Novosel said. "You know, I've seen it across the state, but the first I know of in the Bay Area."
The plane is registered in Reno, Nevada, according to the Federal Aviation Administration.
It was on its way from Lake Tahoe to Hayward. The two inside the plane walked away without any injuries and no one was hurt. There was also no damage to surrounding structures, including the freeway or the plane.
But of course, the Saturday evening commute through Ashland was snarled as crews worked to remove the aircraft from the interstate.
"You can have all the traffic you want in the world, but just long as nobody gets hurt. And you know, that's about it," Castro said.