Apple Inc. is scaling back its plans to build self-driving cars, focusing instead on the software and technology for autonomous vehicles, according to a New York Times and MarketWatch.. In June, Apple Chief Executive Tim Cook told Bloomberg News the company was “focusing on autonomous systems” but didn’t go into details.

The Times said Apple’s pivot after years of work on the so-called Project Titan came after complications caused by the sheer size of the self-driving-car project and lack of a clear vision for the end product. After longtime Apple hardware executive Bob Mansfield took over the Titan project last year, he shifted its focus from building a car to the technology behind it, the Times said. Apple plans to test its technology with a self-driving shuttle van between its Silicon Valley campuses, the Times reported.