Electric cars still require rubber tires, most of which are made from fossil/petro resources.

Electric cars still require roads to drive on, many of which are asphault, which contains cancer causing aromatics, and is the lowest, heaviest product in a refinery crack tower.

Many lubricants which are derived from fossil/petro are used in electric car transmissions, etc.

Electric cars have no less fossil/petro derived plastic and polymers than conventional cars.