Antonyms for the phrase "am in driver's seat" can include "not in control," "not leading," "being directed," "being a passenger," or "having no authority." These antonyms all suggest a lack of power or influence in a particular situation. Being in the driver's seat means being responsible for making decisions and taking action, so the antonyms imply a lack of responsibility or agency. This can apply to many situations, from work to personal relationships to politics. When someone is not in the driver's seat, they may feel powerless or frustrated, but it's important to remember that leadership and control can shift over time.