I am looking for a map. A very special kind of map, that ISPs all over the world have told me is impossible: An internet service map!

I was wondering if there was a generalized map of all major ISPs coverage area superimposed on a map of North America. Speed of the connections being indicated in some way would be a definite plus. I have to move back to the US after a long stay abroad, and I want to at least have good internet speeds (up and down) so that I can move the files I need for work (i work remotely so there is no office per se).

Does such a thing exist?