The story focuses on Elon Musk's concept of "gigafactories," which he describes as "machines that make other machines." These massive production facilities are crucial not just for Tesla but for the entire tech industry, promising efficient and low-cost production of electric batteries at a large scale.

The term "gigafactory" combines "giga," meaning billions, with the idea of large-scale production units built in stages. While Musk popularized the term, it has since been adopted widely in technology and automation circles.