Respectfully, all of these claims have really been de-bunked already. Even if we make all our electricity with coal (which is insane and kills tens of thousands a year) EV's are still cleaner than gasoline powered cars. If we make the power with thermal solar, it's not even a debate anymore.
Talking about the pollution from making the cars and the batteries, why doesn't anyone talk about the pollution from creating the oil and gasoline? Not to mention the unbelievable amount of electricity required for the refining process, the refining process itself requires a power plant that more often than not these days is burning coal.
Every gallon of gasoline created requires a full 4.5 KW/h of electricity to create; refineries in the UK alone used 5600 GWh of electricity in 2005. In addition to all the other environmental damage from drilling, transporting and refining oil.