Also My local small petrol station can fuel say 60 cars an hour have you any idea what sort of HVAC plant is needed to store and deliver that sort of power.

You can convert IC engines to burn hydrogen and they can just slot right into existing models.

You can also use intermittent wind and solar power to create Hydrogen for use later.

Most A/C and heat, dryer, range are 240V.

An electric car can charge at night when load is low, so the power infrastructure that is engineered for high demand due to cooling in the middle of the day in summer will work just fine if everyone is charging at night. In other words, the grid is already mostly robust enough to handle this load.

Also what happens when a large number of people put their cars on charge when they come home from work.