Alone (2020) on Netflix

Plot summary

To relocate, recently widowed Jessica is driving a mountainous highway in Oregon with a trailer in tow. When she tries to pass a Jeep, its driver speeds up and nearly sends her into a semi-trailer truck, then tailgates her before veering off. She sees the same Jeep again while refueling. After a night at a motel, she is preparing to leave when the man appears, awkwardly apologizing for his behavior. She drives off, but he soon blocks the road with his arm in a sling, claiming his car has broken down, and asks for a ride. Jessica senses danger and refuses. That night her trailer fishtails and she crashes, and she discovers the tire was slashed.