Their Quote, "...send a letter to the editor telling automakers to use their engineers, not their lawyers."
Here is a new hurdle!
http://www.ucsusa.org/clean_vehicles/avp/
There is no such thing as a ZERO emissions vehicle, unless you start the timer after it has rolled of the production line. Manufacturing a car generates quite a bit of pollution. So don't trust the commercials or the media. Maybe the car can suck up the pollution...
Transportation is a good start. But the scale of the global warming problem and the limited time requires us to look at other sources of pollution: power plants, deforestation...
Our future solutions have to be throughly researched and planned and logical. We don't want to create other environmental problems while solving the current ones.
In case of hydrogen, we are not even solving our current problem... If you don't know, Water Vapor is a green house gas!