I love trucks and they will figure out a way for the future and maybe some kind of a vacuum for smaller items and "freight" by truck or train for the larger items.. Banks had vacuum systems to transport things to the teller why not smaller special delivery things going to a central location in the cities and it would be faster too---Heck build them in the air--clear tunnels and stuff so that you can see them moving. Maybe hard plastic things that can be made from recycled material to get rid of it...I can see this but of course at that time I might have another address.. lol Love the discussions to and fro was interesting to read your different points of view..Love it clancey