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.
On Tuesdays and thursdays I have to leave later but I may be able to find someone else to pick me up. I'm okay with waiting for the other person if their classes go on later. I'm a fairly quiet person to ride with but I can make friendly conversation.