Earlier quoted context omitted.
Supposedly with a 300 mile range versus ~1400 miles for a typical semi truck. I'm sure there are niche uses, but it isn't any sort of enormous breakthrough. Edit: Product page says 300/500 range, so some option I guess: https://www.tesla.com/semi/?new
Are you sure about that range? It seems really really bad.
No idea what their source is though.