A metaphor for a situation in which someone finally gets away from an unwanted partner. Someone who has found a rebound after a breakup, may have used that rebound as a Getaway car.
A Getaway Car is usually a vehicle that criminals use to get away after they commit a crime. To a person who wants to leave an unhappy
relationship, any excuse and circumstance can be used as a getaway car, such as pregnancy from an ex, emotional unavailability, or supposed death of a
family member.
American singer-songwriter
Taylor Swift coined this version of the term on her 2017 song Getaway Car.