Apologies Darrell, this time I did mis-read... CleanTechnica as ArsTechnica, my mistake.

I did go and have a look at the CleanTechnica article, very interesting, thanks for the link to it.

I notice Mr Barnard did not declare his conflict of interest, by being a member of an "Electric flight" company as any conflict of interest, but as more like a sales pitch, as if it should make his word more reliable, rather than less.

Anyhow It does warrant a post of "Peer review". I have it on my list, will let you know when done and published. Maybe a day or two.