Room-temperature superconductivity looks like it might be a step closer to becoming a reality. Let’s stick with fiction for the moment though, what technology would you put in a cyberpunk world that makes use of zero-resistance electronics without the need for massive cooling? Super-fast computers? Super-powerful magnets? Maglev? Railguns?
Some really good points here. I was thinking about fusion being the classic sci-fi power source, but if you can get massive improvements on existing power sources then you don’t really need the huge investments to get there!