Wow - even though it needs a constant power supply right now, it's still useful as hell! Loading aircraft with munitions, working in warehouses, lifting patients in hospitals - the uses of this thing are endless. Hell, they would be great in field artillery for moving the projectiles around (minimum 95 lbs.) and moving the howitzers (16,000 lbs).

There are a lot of suppositions to be made since I don't know what the design load limits for the 777 are. Per the Federal Aviation Regulations, the positive load factor required for this category of airplane is between 2.5g and 3.8g at maximum takeoff weight. At the minimum that means the wings must support between 2.5 and 3.8 times the force of gravity to be certified. The significance of 154% on the video is that they were trying to get to 150% of the design load limit before structural failure.

Anyway... the maximum take-off weight of a Boeing 777-200 is 554,000 lbs (keep in mind, this is now the smallest, lightest 777 on the market. The newer Boeing 777-300ER is 775,000 lbs., the 747-400ER is 910,000 lbs, and the upcoming 747-800 is tentatively at 970,000 lbs. For comparison's sake, the A380's is 1.235 million lbs.) That means that wing was supporting one half the take-off weight multiplied by between 2.5 and 3.8 - between 692,000 and 1052600 lbs, and that is just for 100% of the load limit!

I'm glossing over lots of subtleties, but the general idea still stands. That's a lot of force!