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'm looking for a long-term car or van pool solution. I live in Winchester and can meet anywhere around there. My destination is in the vicinity of the Reston Station Metro, but any Silver Line metro stop west of Reston Station is alright. It would also work if the destination is the Purcellville Commuter Lot. I generally work 8AM - 5PM, Monday - Friday, but I'm flexible. I'd also be flexible for a Monday - Thursday schedule.