Two cars dropped into a 20-foot sinkhole off Laurel Canyon Boulevard&nbsp;in Studio City on Friday night, authorities said.According to an account on the LAFD website, firefighters arrived at the sinkhole and found one car upside down in rushing water. The occupant, a 48-year-old woman, was standing on the car about 10 feet below street level.&nbsp;Firefighters lowered a 20-foot ladder to her, allowing her to climb out, and took her to a hospital in fair condition. En route, she said that while she was driving, she felt the car pitch to the left, then it tumbled into the sinkhole. The airbags deployed, water started coming in, and she tried to raise the windows. She was able to open the door and climb on top of the car, where she screamed for help.&nbsp;She said she thought she was going to die. Then she heard the firefighters yell back to her.The driver of the second vehicle was able to escape uninjured before it fell. Both vehicles are expected to be removed Saturday. &nbsp;Meanwhile, a fire truck was left teetering off the edge of a highway in the Cajon Pass on Friday night when another roadway collapsed. The truck, perched on the side of Highway 15, wound up falling off the highway a while later, but no one was injured, according to the San Bernardino County Fire Department.A car sits in a sinkhole on Woodbridge Street near Laurel Canyon Boulevard in Studio City following Friday's rain.