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.
HI I live in Blaine Minnesota on Jefferson Street and 109th. I am looking to carpool with someone to downtown saint paul monday through friday to save money. I generally leave at 6:30am to be to downtown at 7am. I leave downtown and commute back to blaine at 3:30pm.