Which product innovation did Amazon first use in 2016 that reduced last-mile delivery times by up to 80% in certain markets?

The transportation industry constantly evolves with innovative solutions to address efficiency, sustainability, and safety concerns. One particular product innovation revolutionized the logistics sector by dramatically reducing delivery times and transforming how goods are transported. Test your knowledge about this game-changing development that has reshaped supply chains worldwide.

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Drone delivery system (Prime Air)
Autonomous delivery robots (Scout)
Electric delivery vans (custom-built by Rivian)
Amazon Key in-garage delivery system