Street View Guy

Today I was using Google Street View in Google Maps, and I came a cross a special street view guy.




I know, it is not a very high quality image, but as you can see, the Google guy is holding balloons, and has a party hat on.
The people at Google like to play around with there characters some times, for instance, on Valentines Day there was a heart instead of the usual orange guy. But they usually have a purpose behind it.
I searched Google, but was unable to find anything about it. If any one knows what it is for, please let me know.


--Update--
It appears that today is Googles 10th birthday, that would explain the weird google street view guy.