The Lady in the Car with the Glasses and a Gun — Sebastien Japrisot

A classic noir suspense novel back in print. Dany Longo is blonde, 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.