Bus 44

Bus 44 is a Venice and Sundance Film Festival award-winning short film written and directed by Chinese-American filmmaker Dayyan Eng in 2001, starring Chinese film star Gong Beibi and Wu Chao. Bus 44 takes place on the outskirts of a small town and tells the story of a bus driver (Gong) and her passengers' encounter with highway robbers. The film was loosely based on an amalgamation of supposed true events, though there has never been any verified source.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.