The Buick LeSabre was Mike Ehrmantraut's second car. Mike usually uses this vehicle when he does not want to be spotted, recognized or tracked.
Better Call Saul
Mike brings Kaylee back to his mother's house, the car full of balloons. He then goes a warehouse owned by Gustavo Fring's chemical supplier Duane Chow. This one and his secretary were taken hostage by four cartel hitmen. ("")
Mike and Jesse drive to Gus's factory farm to protect Gus during an appointment with the Cartel. ("")