The folks at SEMRush spotted a new test format for Google Ads in the mobile search results. This one is in a carousel format where you can swipe left to right between ads and this carousel is named "people also considered."
I don't think I've seen this before, nor can I personally replicate this on my testing devices. SEMRush posted a video of it in action on Twitter.
Here is a still shot:
Here is a GIF of it in action:
Have you seen this ad format before?
Forum discussion at Twitter.