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.
Our carpool group has 5 kids with one open seat. We meet at the Autozone parking lot in Morrisville ( Davis drive & Morrisville Carpenter road) in the morning. Family takes turns to drive. The driver leaves for the school at around 6:55am.