Which major food chain first implemented the heat-wave delivery bag technology in 2019 that uses patented electromagnetic fields to maintain food temperature for up to 45 minutes?

In recent years, food delivery has undergone tremendous technological transformations. Major restaurant chains and food service companies have invested millions in developing proprietary delivery technologies to stay competitive. This trivia question focuses on a groundbreaking food delivery innovation that changed how hot food reaches customers' homes. Test your knowledge about this significant retail technology advancement in the food service industry!

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Domino's Pizza with their 'HotWave' technology
McDonald's with their 'McHeat' delivery system
Chipotle with their 'ThermaWrap' technology
Pizza Hut with their 'HeatLock' delivery bags