Dave Cain posted a screen shot on Twitter of Google showing him the people also search for buttons under a snippet but in this case they were stacked up on top of each other instead of a carousel format.
Here is Dave' screen shot:
This is how I personally see a "people also view" carousel:
This might be a test, might be a feature, might be a bug or it might be some magic pixie dust - but it was spotted in Google.
Forum discussion at Twitter.
