All of these cars use precious metals and resources which come from (probably) China who pollutes like hell to get them so who knows what the long-term ramifications are.
Pollution comes in various forms. Right now I'm less worried about heavy metals seeping into the land in some remote area of the world than I am about greenhouse gases. I'd rather fence off a square km to pollution for a dozen cars on the road that won't heat up the atmosphere more.
