Here are another two examples, this time from Google themselves, of the new Symbols feature in the Google Maps API.
This History of Walmart Map uses animated symbols rather than map markers to show the growth of Walmart in the USA between 1962 and 2006.
This Symbols on Polylines Map demo shows Symbols being animated along polylines.
These two examples really show the new possibilities for map developers to create even more compelleing visualisations with the Google Maps API.
Are you excited yet?