Actually, for that money, I estimate they should be able to install about as many EV charging stations as we currently have gas pumps. The question is, why do we need all of them when EV cars only amount to a tiny fraction of all vehicles on the road?
The bigger question is how much will it cost to upgrade the electric grid to support all of the additional demand? Electricity doesn't grow on trees, and to support all of that added current draw, many new transformers will have to be installed, perhaps many new substations, not to mention the building of perhaps many new additional power plants.
And where will these new plants get their power? Coal? Dwindling rivers? Nuclear?