Sacre, that's been argued and refuted before. Production power plants that run on fossil and coal fuel are hugely more efficient at producing energy per mass of carbon produced than vehicles, not to mention that they have much higher standards for maintaining their pollution. It should be also noted that a fair percentage of electricity on the grid comes from nuclear, thermo, wind, and solar. So, overall in the end, emissions are reduced. Not to mention, most people will charge their vehicles at night, when electricity mostly goes idly to waste.
Really, it's not hard to find studies and arguments that largely debunk the elongated tailpipe theory on google. And even if it were true, it's not like we can't activity change our infrastructure. We've largely been shifting from fossil to other energy sources over the past decade, and will continue to do so well into the next century (also try googling ITER and tokamak).