That is all pretty much true. It would be something worth striving for to be sure, but it's not going to happen in our lifetime. This paper reminds me of this cartoon:
If we just get these super conductors...and then if we just get these super batteries...and then we just get these super high powered motors designed...For me, reading papers like that gets old pretty quick. I guess that's why I am in the engineering trenches and not doing pure research.