Electric cars and social problems

The planned increase in electric cars would require so much lithium that mining it is expected to cause great social problems. However, investing to encourage walking and use of other kinds of transport could avoid the problem by reducing the number of cars needed.

I don't know whether this research takes account of the need for lithium for power storage to have power available for times with little wind and little sun. Or for the possibility of using people's cars' batteries for that purpose.