Pretty fantastic stuff. Cost of the system aside, there would be two great challenges to using HULC or its successors. The first is power. The challenge of keeping units supplied with batteries is already a daunting one. Providing the batteries to sustain a power hungry beast like this for multiple day operations would be difficult to overcome.Secondly, making the system robust enough to survive years of use in unfavorable environments will be tough. If a HULC like system is ever adopted, expect to see Special Operations units use it for niche applications first.