A method of loading at least one item onto a vehicle is provided. The method includes providing at least one vehicle for operation in a desired environment, providing at least one mechanism operably connected to a portion of the vehicle, and gathering at least one item as the vehicle travels in the desired environment. The method further includes arranging the items on the vehicle via the mechanism based on at least one criterion, such as the weight of the items, so that the items can be loaded onto the vehicle without needing the vehicle to travel to the items in a specific order to thereby enable the vehicle to operate more quickly in the desired environment and conserve power.