Pop quiz, hotshot. There’s a bomb on a bus. Once the bus goes 50 miles an hour, the bomb is armed. If it drops below 50, it blows up. What do you do? What do you do? An LA cop (Keanu Reeves) with a bus passenger (Sandra Bullock) behind the wheel face off with an explosives expert (Dennis Hopper) out for a ransom in Jan de Bont’s taut, adrenaline-pumping action thriller.
