The greatest problem with the combat load today is the body armor. When you start with 45 lbs burden it is a quick trip to 30% or 50% of the porter's weight. Soldiers are not meant to be pack animals and when used as such are less effective at soldiering. The best part of training is realizing what looks good on paper doesnt work in reality. Two things are important here, 1)you can not train the average Soldier to be a SuperSoldier no more than you can train an attack dog to be an attack mule and 2) the carts or jeeps or iBattles are not likely to solve this. Likely just adding to the stuff Joe can break or lose. I have often joked with my battle's that "They" weigh you down so "They" know you can't run away. You always need about twice as many troops to do what half could do in better circumstances.