Research shows that wearing your mask, and opening the front passenger window, and the window behind the driver seat helps to reduce the spread of the novel coronavirus in your vehicle. See this NY Times article.
I am a student at the University of Houston San Antonio, but live in Austin, Texas. I am looking for someone to carpool with 2 days a week from Austin to San Antonio. I can drive one day, and you can drive the other. We can also split gas costs.