And how fast we get there essentially depends on our progress in energy storage + energy-on-demand technologies.

Renewable energy production is not in line with our peak demand times (noon, evening, morning to a lesser extend).

Somehow we need to be able to save the energy produces/harvested when it's not needed and provide it to handle the demand spikes to ensure grid stability.

It can be, but the grandparent comment seemed to imply that just switching to electric cars will do that, which is disingenuous. It can help, but the power grid needs to be overhauled as well.

If electric cars do take over, that will cause a substantial increase of needed power, something I don't know if it can today. Right now the USA hasn't built a nuclear reactor in decades. I would love to see a more distributed power network (I.e. every home has solar and wind power).