New Jersey is unique in requiring gas station attendants fill the gas in cars. During COVID-19, that may be an advantage (fewer people handling pumps/register or going inside to pay) and also a disadvantage (risk to workers and customers talking through windows). We could account for the risk of transmission by contact with surfaces and the benefit of reduction in contact with surfaces and the risk still present through payment methods. To quantify the risk through airborne droplets, we could use experimental fluid mechanics techniques to measure the droplet flux you might expect coming into the car and going out of it, and how those are reduced by interacting through the passenger window (assuming there is no passenger there) as opposed to the driver's side window. An additional analysis can be done on the value of the service jobs created during a time when the service industry has been devastated.