there's research in ecological engineering studies show that compared to a conventional car providing the raw materials for an electric car and manufacturing it generate to an. half tons more c o two and the electric car has to be driven a long long way to offset those extra emissions. after thousand kilometer after about eighty thousand kilometers electric cars come into their own that's when there are advantages and when they prove more environmentally friendly than conventional cars and the conference in and. the environmental footprint of an electric car needs to be shrunk a lot of r. and d. is going into batteries to reduce their consumption of raw materials and to boost performance to increase the range of electric cars new batteries need to hold more charge and their manufacture needs to be more environmentally friendly but this research won't bear fruit overnight by monnin what so once the standard pace of