The rumors that Apple may be building an autonomous system received an update yesterday. During a conference call with investors on Tuesday afternoon, CEO Tim Cook hinted at the work Apple is doing with such systems as well as with artificial intelligence (AI).

“[Autonomous] systems can be used in a variety of ways,” Cook said. “A vehicle is only one, but there are many different areas of it. And I don’t want to go any further with that.”

There you have it, folks. While it seems that Apple may be building a vehicle — and even received approval to test one in Californian roads — what’s clear is that it’s developing an autonomous system that could be used in more than just cars. This shouldn’t come as a surprise, especially now that Apple has been actively pursuing AI development.

“We are very focused on autonomous systems,” Cook added. “We do have a large project going, and are making a big investment in this. From our point of view, autonomy is sort of the mother of all AI projects.”

Much of the focus to this point has been the application of autonomous systems in cars, and for good reason. Autonomous vehicles are heralded as the future of safer driving. By eliminating the cause of most major accidents — human error — self-driving cars could save some 40,000 lives each year in the U.S.

But what is the potential of such systems beyond the automotive example? If anyone could think of exciting new ways to use AI and autonomous systems, it’s the creative minds at Apple. Hopefully they won’t keep us waiting too long to learn what new tech they are cooking up.