I don't claim to be an expert, but it appears that Tesla has experimented with liquid cooling Supercharger stations before: https://electrek.co/2016/07/21/tesla

I don't claim to be an expert, but it appears that Tesla has experimented with liquid cooling Supercharger stations before: https://electrek.co/2016/07/21/tesla-ends-its-thin-liquid-cooled-supercharger-wire-experiment-in-mountain-view-but-the-tech-lives-on/ https://electrek.co/2016/07/21/tesla-ends-its-thin-liquid-co... In the above case, they used liquid cooling to make the charging cable diameter smaller, but perhaps the technology can be used to make the regular Supercharger cable capable of handling more power.