It's not just the grid, we'd need a lot more power as well, some estimates are around a third more if everything is EV. Now, it's coming slowly, so there is time.
Without nuclear as a credible option, it's going to be natural gas for the most part. For some reason, I read that solar doesn't work well at night. But this is really a long term transition from ICE to EV, very long term, decades, it's not as if EVs are going to save us from the Saudis and OPECs of the world.
This is why we need a realistic outline of a PLAN, not just waving hands in the air. There is so much political and ignorance in this, reality is really suffering. One side wants to drill baby drill and the other side wants W&S and EVs tomorrow.