The Lady in the Car with Glasses and a Gun (1970)

Her first mistake was getting into the car.

Dany Longo is red-haired, beautiful, disturbed, passionate--and nearsighted. As she speeds through the south of France in a purloined Thunderbird on an errand for her employer and his wife, no one, including Dany herself, knows where she is headed--or why she is going there.