Right now, if you get an plug-in vehicle, you essentially forgo the need to burn petroleum in exchange for power generated by the local power plants or whoever your city mandates you buy your electricity from. So we're pretty much making someone else increase the load of chemicals that affect the environment, and ultimately, the planet.
What if the government offers additional incentives for consumers who purchase renewable energy solutions in addition to the EV? Or what if the power companies also provide incentives for consumers with EV to drive even less?
More at GreenJava.