After watching it on youtube it reminds me of the early days of...

After watching it on youtube it reminds me of the early days of MST's big bertha. to me it is a bench test type shown, proving the tech in priciple, very big very cumbersome, looks to be using a lot of electrical power as has been noted before it would take something the size of a ship to operate currently....however given time this to may be overcome, doubt it to be much of a threat to MST tech at the moment.
Cheers,
mrdog.