Right. But the highway system was something that greatly benefited the States themselves as it provided them with new roads stimulating their local economy and

Right. But the highway system was something that greatly benefited the States themselves as it provided them with new roads stimulating their local economy and creating a great number of jobs (to build the roads). But the States weren't forced to do so, and it took 35 years (I didn't know that until I looked it up[0]). Heat pumps benefit consumers, and climate change, but there's probably less incentive for States to push the program, especially if they don't really care about climate change anyway. [0] https://en.wikipedia.org/wiki/Interstate_Highway_System https://en.wikipedia.org/wiki/Interstate_Highway_System