You're right, electric cars were not available in the 1970's. However, unless you're generating and storing enough solar power to power your car year round, at

You're right, electric cars were not available in the 1970's. However, unless you're generating and storing enough solar power to power your car year round, at anywhere from 2-17kWh a day, then your electric vehicle will still be using fossil fuels. Even power grids that utilize solar farms still need natural gas plants online that can handle shortages on short notice.