Check out the first photos of Waymo's self-driving big rig

Waymo's self-driving work is shifting gears to bring big rigs into the fold -- and now, we know what the autonomous trucks will probably look like when they eventually hit the highways.

The first look at the Waymo big rig comes via Jalopnik, which published a set of images featuring a truck that looks to be equipped with the company's self-driving sensors parked in a lot. The images came to the site via an anonymous source, so we can't say for certain where or when they were taken.

The pics show off what appears to be a slick blue Peterbilt rig sporting the Waymo logo, along with a sensor package that looks very similar to the setup we've seen in the company's fleet of self-driving Chrysler Pacificas.

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Another photo shows the front of the truck, pointing out the placement of the system's radar, LiDAR setup, and other sensors. Those details, along with the obvious Waymo branding, leave little doubt that the rig is the real deal -- but until the company confirms the images, we can't be 100 percent certain.

Waymo confirmed it was testing its autonomous platform in Peterbilt trucks earlier this month following speculative reports based on a picture obtained by BuzzFeed, but the image that sparked the admission never surfaced.

The company told us then that it's testing the trucks outfitted with its autonomous platform on a private track in California, and collecting valuable street data on public roads with a driver behind the wheel, per California law. The program is projected for expansion to Arizona later this year, where Waymo has another pilot program giving the public free autonomous rides in its Pacifica fleet.

We reached out to Waymo's reps for comment about the images and any new details regarding the company's semi truck testing program, but haven't heard back. We'll update the story upon receiving a response.