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Passengers are usually in the strongest position and the most confusion
If you were in the back seat, you almost certainly did nothing wrong, which removes the argument that occupies most of an ordinary car case. What replaces it is administrative fog: an app-based company, a driver who is a contractor rather than an employee, a claims process that runs through a portal, and a genuine question about whose insurer is responsible. Being blameless does not automatically make it straightforward.