I honestly don't know which idea is honestly more "realistic". I think either halting climate change in time is probably a long shot, but which is actually feasible......

The largest problem with electric cars is that we more than likely aren't going to be able to force people to stop driving with gas. Which means we will still be reliant on a fossil fuel industry, and when there is demand, there will be supply. Unless we quickly curb demand to a significant degree, fossil fuel companies will do anything they can to keep those cars on the road.

The second largest problem with EVs is that they have a much larger production carbon footprint than traditional vehicles. This gap in the carbon footprint is closed within a year or two of driving, which normally would be fine..... but with the time constraints of climate change, that initial production carbon is a pretty big hurdle.

And I agree that we have to make progress in several forms, but some of those forms are just going to be a fossil fuel company's attempt to preserve their profit model disguised with a green sashe.