Speed

Keanu Reeves stars as Jack Traven, an L.A.P.D. SWAT team specialist who is sent to diffuse a bomb that a revenge-driven extortionist (Dennis Hopper) has planted on a bus. But until he does, Jack and passenger Sandra Bullock must keep the bus speeding through the streets of Los Angeles at more than 50 miles per hour - or the bomb will explode. (official distributor synopsis)