It is an uncommon phenomenal incident that could happen in any part of the Earth surface but somehow, the case of a Georgia's restaurant was cause by a heavy rains and flood. The Sonic fast food place has been swallowed by a big sinkhole which actually surprised the owner and those folks living on the nearby area. According to Associated Press, Cleveland has been struck by a flash-flood which has been blamed because of the huge opening of the ground.
There are few other related incident that surfaced in the Internet like what happened to Guatemala recently. That is probably much deeper than the Georgia's sinkhole which could be viewed on top like a big hole in the middle of the road. You can check the following video below for more taken by an AP who get a chance to tape the evidence.