The biggest concern is the batteries. Anyone who postulates that the emissions are equivalent because somewhere a power plant is pumping out emissions even if it's not coming out of your tailpipe, doesn't quite understand how that works. We are going to have a disaster when it comes to the disposal of these used batteries, never mind the horrific mining practices that are destroying natural landscapes in order to reach Cobalt and all of the other crap you need to make them. This is a bridge technology to hopefully something actually ecologically conscious and better for the environment. The weird thing is, this was already in play many years ago but they killed the guy who came up with it. Look up Stanley Meyer and the water powered car and you'll see why it'll always be about money and no one really actually gives two s*<b>*</b> about the environment