Answer
Jeff Daniels starred alongside Keanu Reeves in Speed, a 1994 action thriller film directed by Jan de Bont and written by Graham Yost. The film follows a Los Angeles police officer (Reeves) who must prevent a bomb from exploding on a city bus, which is rigged with a remote detonator that is set to go off if the bus' speed drops below 50 miles per hour (80 km/h).