Which transportation company pioneered the 'envelope-to-box' adaptive packaging design that automatically adjusts size to match contents, reducing empty space by up to 90% and cutting carbon emissions?

The transportation industry has been undergoing a significant shift toward sustainability, not just in vehicle technology but also in how products are packaged and shipped. Major logistics and transportation companies have been innovating with packaging designs that reduce waste, improve efficiency, and lower carbon footprints. This trivia question tests your knowledge about recent packaging innovations in the transportation sector that have made headlines in the industry.

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DHL with their 'SmartBox' technology
UPS with their 'Box on Demand' system
FedEx with their 'Expandable Green Package'
Amazon with their 'Frustration-Free Packaging'