“I object to the word saunter.” “Your objection is noted.” His gaze didn’t shift from her. “Put your seat belt on.” He was trying to humiliate her, to treat her like a child. “My mother doesn’t even make me wear my seat belt,” she scoffed.
She's making a lot of assumptions here. It's just a basic thing to wear a seatbelt in the car. It's needlessly unsafe to not wear one, lacking a basic level of self-preservation.

