If knew I could get tested once I arrived, I'd fly. Then I'd immediately get tested. If negative, I'd quarantine for three days, then get tested again. If still negative, I'd quarantine for two more days, then get tested again. If still negative, then I'd visit Mom. By that point I'd have taken up that time to drive across the country anyway.

If I couldn't get tested at destination, I'd keep doing whatever I could remotely to support Mom.