Advantages: These vehicles use an electric motor, so they are very quiet, no smell and no pollution from exhaust gases. They can even be used indoors, in tunnels and mines. Oil for gasoline and diesel is a limited resource - it will not last forever and is becoming more expensive. If the electricity for a battery-electric vehicle comes from a renewable energy source, like a windmill, solar cells, geothermal or hydroelectric, then it will not produce as many global warming gases.