One million plug-in hybrid vehicles on America's roads by 2015 – what seemed utopian just a few years ago is now President Obama’s stated goal. The world’s rising demand for energy, limited oil resources as well as stricter environmental and climate protection regulations are causing us to rethink our driving habits in order to achieve sustainable transportation and energy efficiency . Electric vehicles, powered largely by electricity generated from renewable sources of energy, meet these objectives extremely well. Electric vehicles are destined to eventually conquer the last great bastion of conventional fuel consumption – road traffic. Green transportation: Electric cars and vehicles in urban traffic Particularly in cities , quiet, emission-free electric vehicles are ideal green transport solutions. Public urban transportation, such as trams and trolleybuses has been part of our lives for many decades. Electric cars and vehicles are the only f...