Anyone selling "warp drives" that do not go faster than light kind of missed the point of why people are excited about warp drives.

And if the video @gmartire just posted is explaining the paper correctly, this warp drive also doesn't accelerate anything. You have to figure out how to speed up on your own.

I don't really see why anyone would bother doing any of these things. To dilate time better? I'd rather invest the same amount of mass towards a larger engine/fuel so that I can go faster, dilating time further and getting me there sooner.