Electric cars will help tremendously with load shifting once we get bidirectional charging in 1-2 years. A Tesla Model 3 can fully power an average 3000 sq-ft home for 2-3 days. What will be most powerful though is helping the grid with peak shaving by giving some of that stored power back during the worst hour or two of the day.
That said I don’t disagree on some generation challenges, I’m finding it hard to find transparency on our long term plan to meet our power mix needs in the winter with pure renewables and no nuclear. Summer (where we have rolling blackouts currently) is relatively easier though since it tends to be a matter of just bridging the gap for a short while, which you can do in all sorts of ways.