Go to pay for Tesla solar system to charge your car.
My house is maxed out for what is practical for solar panels given the layout. I get on average 55 kWh a day in power generation. It takes 92 kWh to fully charge my Model Y.
So if my house solar system was dedicated to charging the car, it would take 2 days to fully charge the car. In reality it would take over a week.
I suppose if someone lived in Arizona and had many more panels than I do, then this would work. Certainly, it’s not practical for everyone.