Our maps sleuth spotted yet another test with Google Maps, Sergey Alakov posted on Twitter Google testing a "see web results" button in the Google Maps local results section.
If you click on that button, you are taken to the web results and out of the local results.
Sergey wrote, "Google is testing hidden web results in local finder? After clicking "See Web Results" user is sent to SERP."
Personally, I cannot replicate this but I do believe at some point in the Google local results history, Google did have a button to go check out the web results.
Here is a screen shot you can click on to enlarge:
Forum discussion at Twitter.