First announced by Elon Musk in 2017, the Tesla The Semi has been one of the most delayed products in the company’s history. But the new electric car is finally here, with PepsiCo be the first customer to receive some of the 100 vehicles it pre-ordered.

“PepsiCo owns one of the largest private fleets in North America, and that’s one of the reasons we’ve partnered with Tesla,” said Mike O’Connell, vice president of supply chain for Pepsi. “We have the 15 in Modesto that we’re launching … and then we have 21 in Sacramento.”

For starters, Pepsi is using the trucks to deliver Frito-Lay products from its facility in Modesto, California, up to 425 miles on a single charge. It also delivers Pepsi from its Sacramento warehouse on 100-mile daily routes, going direct to stores and driving 300 to 400 miles to other warehouses. Pepsi declined to say whether it had pressed the trucks to test whether they have the full 500-mile range that Musk promised.

CNBC visited Frito-Lay Modesto where PepsiCo has transformed the facility in partnership with the California Air Resources Board to demonstrate the sustainability benefits of zero and near-zero emission technologies. The Tesla Semis there are the latest additions to the company’s fleet of more than 80,000 vehicles.

“This project has resulted in a 91% reduction in greenhouse gases, and we are using this as a showcase to then transition into our other businesses,” O’Connell said.

Watch the video to learn more about PepsiCo’s Tesla Semis and if they live up to the hype.