Sergey Alakov spotted Google testing or launching, I don't see it yet, a button in the local panel for "get in line." It is a waitlist feature that seems to be powered by DineTime for restaurants to enable people to put themselves on a wait list to be seated for a table. Sergey posted screen shots on Twitter and on his blog showing off the feature as it is integrated into Google.
Here is the call to action button to "get in line."
Then it communicates how long the wait time is:
You can decide if you want to wait in line or not and then do it:
I am not sure if this is a limited test or a roll out of some sort for those restaurants that use DineTime?
Forum discussion at Twitter.
Update: I can trigger it using this query.