nah, they just render the whole damn thing at once and then chop it up. eg notice how “5th Ave” spans these 2 tiles:
http://mt0.google.com/mt?n=404&v=w2.52&x=19299&y=24649&zoom=1
http://mt0.google.com/mt?n=404&v=w2.52&x=19300&y=24649&zoom=1
nah, they just render the whole damn thing at once and then chop it up. eg notice how “5th Ave” spans these 2 tiles:
http://mt0.google.com/mt?n=404&v=w2.52&x=19299&y=24649&zoom=1
http://mt0.google.com/mt?n=404&v=w2.52&x=19300&y=24649&zoom=1