Collateral (2004)

Max has lived the mundane life of a cab driver for 12 years. The faces have come and gone from his rear view mirror... until tonight. Vincent is a contract killer. When an offshore narcotrafficking cartel learns they're about to be indicted by a federal grand jury, they mount an operation to identify and kill the key witnesses, and the last stage is tonight. Tonight, five bodies are supposed to fall and circumstances cause Vincent to hijack Max's taxicab, turning Max into collateral - an expendable person in the wrong place at the wrong time.

Official website: http://www.collateral-themovie.com/