Coco Robotics, a Los Angeles startup building last-mile delivery robots, has raised $80 million in fresh funding.

The round was backed by angel investors Sam Altman and Max Altman, along with Pelion Venture Partners, Offline Ventures, and others.

This brings Coco’s total haul to over $120 million since its founding in 2020.

The robots, which are emissions-free and can carry up to 90 liters of goods, have reportedly completed over 500,000 deliveries for chains like Subway, Wingstop, and Jack in the Box.

Coco last raised $36 million in a Series A round in 2021.

The company also has a data-sharing arrangement with OpenAI, where Coco gets to use OpenAI tech while OpenAI quietly scoops up robot-collected data to train its models.

Coco was founded by Brad Squicciarini and Zach Rash, who apparently convinced investors that burgers delivered by robots is the future we deserve.