Even if you still run off coal you are decoupling energy source from the vehicle allowing the vehicle to run off any source that currently makes the most sense. You can't run a gas car off coal but you can run an electric.
Power plants are more efficient than small combustion engines as well as having more sophisticated emission controls with no concerns for weight or size with a full time staff to maintain them.
The grid needs to increase 30% to support all cars, it only took 40 years for it to increase 5X from 1960 to 2000, about 4% per year, so less than 10 years to support all cars, easily doable.
Even if you still run off coal you are decoupling energy source from the vehicle allowing the vehicle to run off any source that currently makes the most sense. You can't run a gas car off coal but you can run an electric.
Power plants are more efficient than small combustion engines as well as having more sophisticated emission controls with no concerns for weight or size with a full time staff to maintain them.
The grid needs to increase 30% to support all cars, it only took 40 years for it to increase 5X from 1960 to 2000, about 4% per year, so less than 10 years to support all cars, easily doable.