I worked with some GIS maps a few years ago on a pet project,, it was a way to project them on a website...It looked something like that, except there were no cars zooming past,, just rivers and roads.
One can draw maps using GIS [a heinous task considering the fact that the GIS software works on zoom which can affect the scale once you host it on a webpage]
Secondly, the heavy graphics were abit slow even when hosted locally,, so refreshing them is another hurdle to jump...
However,, with animations and GIFs, i believe this can be pulled off ??