Brings to mind the classic saying: "When you find yourself trapped in a hole, the first thing to do is stop digging." i don't think that just means, find non-carbon substitutes for all the energy we now use. Many things that use energy can and should simply stop.
This is basically "unthinkable" to economists, business planners, war makers, and consumers, but just because we cannot process the thought, does not mean the changes will not take place. We are trapped in our own beliefs about what is necessary and what is impossible. And we are not served well by accommodating ourselves to false understandings of reality that parade around as "normal."
i recognize that there is massive social inertia, and powerful interested parties, keeping us "on the road" to devastating climate chaos. We are "committed to use" many technological systems, as you put it. But realistically, as "unrealistic" as it appears to the "normal" mindset today, massive reduction of nonessential transport is coming fairly soon, in a period of a few years. We need to "stop digging" this climate chaos cavern we're in, and we will, but the sooner the better, and the worse for everything the longer we put it off. What appears as "essential" or "normal" today will shift quickly, and look very differently, soon enough.
i wish there were some "Ghost of Christmas Future" who could visit each of us, and show us that chaotic world of tomorrow, in a visceral experiential way, so we would react with shock to our present day behaviors, and walk into the world as changed people.
We need more and more people all the time who can see where we are headed, and who take the "drastic" step of breaking the hold that "normal" and "unrealistic" have on our consciousness. We need to grow ever more "committed to use" the living systems of the Earth, and our fellow humans, in honorable ways, above all else.