Apple CEO Tim Cook recently provide some insight into its Project Titan initiative, the clearest indication yet that everybody is not deluded in thinking that an Apple Car might be in the works. Apple Pay has also seen a huge spike in subscription numbers, increasing by 500 percent during the last quarter.

Cook spoke at an earnings call, where he mentioned something about how technology affects the future of the automotive industry, The Verge reports. As usual, however, the tightlipped CEO offered nothing else that can be interpreted as concrete details.

"I can’t speak about rumors," Cook said when asked about Apple’s plans for the auto industry. "But as you know, we look for ways we can improve the customer’s experience on different sets of products. We’re always looking at new things and the car space in general is an area where it’s clear there’s a lot of technologies that will either become available or will be able to revolutionize the car experience."

Cook also made it a point to say that they have nothing to announce at the time. This is being taken as a hint that Apple is going to announce something soon.

On to more definitive details, Fortune reports that Apple Pay volume has gone up by a lot for Q4. The payment service has been adding about 1 million users on a weekly basis, which puts it in a much better place compared to the same time last year.

The expansive growth is largely being attributed to the service going international several months ago, which significantly increased its user base. Apple Pay is now available in the UK, Canada, Australia, China, Singapore, France, and Hong Kong. Last month, the service also added Japan and Russia on the list, which likely contributed to the boost in subscription for Q4.