Apple is accelerating its efforts to build an electric car, code-named Titan, and has set a target shipping date as 2019, The Wall Street Journal reported Monday. The tech giant gave leaders of the “committed project” approval to triple their 600-person team.

Although a “ship date” doesn’t necessarily mean the date that customers receive a new product; it can also mean the date that engineers sign off on the product’s main features, the WSJ said. People familiar with the project told the publication house that there is skepticism within the team that the 2019 target is achievable.

The move came after the company spent over a year examining the feasibility of an Apple-branded car. It is finding it extremely difficult to keep its new found interest under wraps. The Guardian reported two meetings that further shed light on the matter.

In May, Apple employees met with officials from GoMentum Station, a high-security testing ground for autonomous vehicles. In emails obtained by The Wall Street Journal through a public-records request, Apple expressed interest in scheduling time at the facility.

Subsequently in August, Apple’s senior legal counsel met with officials from California’s Department of Motor Vehicles (DMV). The department remained most muted on what was discussed at the August meeting, beyond saying that “the Apple meeting was to review [the] DMV’s autonomous vehicle regulations.”

When asked about Apple’s interest in a driverless car last week by late-night talk-show host Stephen Colbert, Apple Chief Executive Tim Cook said: “We look at a number of things along the way, and we decide to really put our energies in a few of them.”