We need more.nuclear fission power plants. Also, I would love to see a nuclear fusion power plant someday. Nuclear fusion will use less fuel over time than nuclear fission, and there is zero chance of a meltdown.
My dad told me the exact same thing, that power grids would never be able to handle all cars being 100% electric. I'm glad you're as smart as my dad.
Gasoline-powered cars will always have the edge when it comes to refueling. Topping off a gas tank takes less than five minutes, charging an electric car takes hours.