When my van had a flat tire during a rush, I used Uber to get to the next stop and asked a local shop to hold packages. The customer waited politely. Planning extra time for traffic and mechanical issues prevents stress. Knowing nearby drop-off spots helps too.
My truck died right before a holiday delivery, and I panicked about missing the deadline. I searched for the amazon flex customer service phone number but ended up borrowing my brother's car. The customer appreciated us calling to explain. That day taught me to always have a backup vehicle option and to communicate early when delays happen during important delivery times.