There has been some research to suggest a connection between sun exposure while driving and skin cancer. How? UVA rays can still get through the window of a car -- damaging your skin over time.
According to a study in the Journal of the American Academy of Dermatology, nearly 53% of skin cancers in the US occur on the left, or drivers’, side of the body. Scientists have found that front windshields block an average of 96% of UV rays; however side windows only block an average of 71% of UV rays.
This fall, don't forget to wear sunscreen while driving; and if you're taking a long road trip, reapply, reapply, reapply!