Which packaging innovation was initially rejected by consumers but later became revolutionary after Coca-Cola spent $100 million convincing the public to adopt it?

Packaging innovations have transformed how products reach consumers, affecting preservation, convenience, and environmental impact. Some packaging breakthroughs were so revolutionary they changed entire industries overnight. This trivia question focuses on a packaging innovation that dramatically altered consumer habits and created new product categories. Test your knowledge of how packaging design has shaped our modern consumption patterns!

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The aluminum can with pull-tab opener
The plastic PET bottle
The TetraPak carton
The aerosol spray can