There are examples of countries getting their shit together and actually expanding mass transit.
If your plan is "Let's make everyone drive EVs" you also did nothing, and fucked over poor countries while doing that.
If we're going to do something, we need to do it right, which means:
1. Listen to climate scientists about what's the best way to mitigate as much as we can.
2. Mobilize every single branch of the government to respond to the realities of climate change.
3. Make the hard decisions and push companies and cities to follow them. We've done this before with the new deal. It's not hard to imagine that level of mobilization.
4. THE MOST IMPORTANT ONE: Plan how you're going to minimize damages that we can't prevent, and minimize damages that are going to be caused by this "move fast" approach. Keep people on your side while making these changes. These changes should come with a quality of life improvement for most Americans.
It's important to remember, climate change was NEVER an individual failing. It was systemic ignorance and failure. Which means the response to it needs to involve as many, or more gears that climate change denial did.