Tapping customers to deliver goods would put the world's largest retailer squarely in middle of a new phenomenon sometimes known as "crowd-sourcing," or the "sharing economy."
A plethora of start-ups now help people make money by renting out a spare room, a car, or even a cocktail dress, and Wal-Mart would in effect be inviting people to rent out space in their vehicle and their willingness to deliver packages to others.
Such an effort would, however, face numerous legal, regulatory and privacy obstacles, and Wal-Mart executives said it was at an early planning stage.
