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.
Looking for an alternative to taking the bus, I just can't keep fitting the bill alone for gas and parking. My arrival and departure times can vary, I'm extremely lucky to have a very hands-off boss who generally doesn't care when I show up or leave. Currently I work an alternate schedule (4 10hr days with one of those from home) but can switch to a regular schedule if needed to make this work.
I'm open to being the dedicated driver if we can work out reasonable cost-sharing. Daily cost of my commute right now is like $15 or so.