...Hopefully if I were to get infected, I would find a one-way car rental in nearby city and stop the trip.
It sounds like a well thought out plan but this raises a question. Will a car company rent someone a car if they have been tested positive, considering that car would then probably have to go into a period of quarantine.
The same related question is whether you could get a hotel if tested positive or would one have to self quarantine in a tent for two weeks and/or could one afford hospitalization out of state for that period of time (I'm not familiar with US health coverage that way).