Once cars are nearly all EV the grid would have to physically be larger. More powerlines, more transformers, more switches to handle more energy and more peak power demand. They will most certainly raise the cost of electricity to do this. Demand for panels will skyrocket, and so will the price. The US uses 330 million gallons of gasoline per day, that is a huge amount of energy in joules to be transferred over. This isn't including diesel. Now with the EV push, using your AC or fridge will get expensive. Solar people don't realize solar panels and related will rise in cost a lot worldwide, and the government will look to tax people on the total solar area to 'support the infrastructure'. If you think about it, gasoline and diesel should be encouraged and prices kept low. Liquid fuel is a great hedge to everything electric.