Depends on what you mean by "ounce of reality".

In reality, there's little that can be currently done mainly because of political policy. That's unlikely to change.

But, assuming policy could be changed, then there is actually quite a bit that could reduce emissions substantially much faster. Carbon taxes, better policies around railways (perhaps nationalizing and expanding ala india), more subsidies for renewable generation and battery production (perhaps funded by carbon taxes?). Stronger regulations on private vehicles (perhaps ban personal private ownership of large trucks and suvs?). But also trade deals and modernization efforts/investments with lagging countries to help them develop carbon free economies.

Now, I don't think policy change is likely. I do however think there are quiet a few policies that could significantly drive change faster than it is already going.