Here's a real and recent news article about how potential risks and opportunities are being explored regarding electric vehicles and the grid [1]. It basically says they're looking into stuff and working on it. Neither doom and gloom, nor the future is now.

Just like the grid adapted to the growing use of HVAC, it will have to adapt to the growing use of electric cars.

[1] https://californiamobilitycenter.org/latest-california-mobil...