FILE PHOTO: A delivery person pushes a cart full of Amazon boxes in New York City, U.S., February 14, 2019. REUTERS/Brendan McDermid/File Photo
An Amazon delivery worker pushes a cart full of boxes across an intersection.
  • Amazon's Prime Day generates a mountain of packages for delivery workers to deliver.
  • Amazon Flex delivery workers say they're preparing for it by taking early-morning shifts.
  • The Flex model, which relies on independent contractors, has become key to Amazon's fast delivery.

As Amazon's Prime Day approaches, one delivery driver in Texas has a strategy for handling the coming avalanche of packages.