I don't think the person you are replying to had a good plan, but solar definitely could offset the energy consumed by cars. The average car will only consume ~

I don't think the person you are replying to had a good plan, but solar definitely could offset the energy consumed by cars. The average car will only consume ~12KWh per day. Even a small 3-4KW system can do that. Yes, its an oversimplification, but in a world where the problem is all the electric cars, you also have rolling battery buffers available whenever you want them. We already use hot water heaters and air conditioners in a similar way. Peak shaving with people's home charging setups wouldn't be hard to add.