Opting to buy an electric car in New Jersey will get more expensive this summer, as the state rolls out a new registration fee for zero emission vehicles. That annual $250 fee for electric vehicle buyers — which will increase by $10 a year until reaching $290 —is set to start July 1 as part of a larger plan to fund road fixes in the Garden State. Earlier this spring, news of the new EV fee was met with skepticism among car dealers and environmentalists alike who worry car buyers will be discouraged from going the clean vehicle route going forward. But a new Fairleigh Dickinson University poll …