Actually I only mentioned the word 'juggernaut' because it was in the title of the thread. We had kinda got lost along the way. However, I also note it is listed in the Oxford dictionary, as a perfectly legally acceptable word, as a noun meaning 'large heavy motor vehicle' so I am not sure how you can describe it as being inflammatory.
I don't dispute your reasoning that goods would always need to be delivered locally from any central railhead ( carters wagaons have done that since the invention of the steam engine), however, that is indeed what happens nowadays with trucks, except the 'railheads' or distribution centres can be long distances away from where the goods are actually required. So to follow your reasoning it is better to have 40 artics running up the country instead of one trainload of 40 truck carrying wagons? Whether loading up smaller trucks is less polluting is indeed arguable, although John Lewis seem to think it is a worthwhile exercise. Ironically many cities in France and Holland currently ban trucks over 7.5 tonnes from entering the precincts so the transfer in those cases is essential. It does annoy me I will admit, to see a 40 foot truck parked in the middle of our cities, usually causing a blockage, and wearing a non-UK numberplate, and I know full well the same truck is banned from doing the same in its home country. Just have a lookout for the Dutch flower trucks.
However, I will return to my original point. I did not state that all trucks should be banned, merely that if there was advantages, not necessarily profit related, to be gained by combining trucks into trainloads then it should be explored., and it was to put the actual truck onto the train, not tranship. If by doing so benefits were obtained, not only by other motorists, but by the country in general, then I cannot really see why anyone would wish to object. As I also mentioned in a previous post ASDA have now decided that it is in their business interest to run a train solely of their wagons between England and Scotland, and they argue that not only is it more environmentally acceptable, it is also financially attractive.
Finally, while I admire your stamina in the trips you describe, I have to hope your concentration at the end of such an ardous journey was as sharp as it was at the beginning. Also the train driver has a load significantly heavier than yours, he has much greater stopping distances to allow for, and always has to assume some lunatic will have decided to jump the warning lights at unmanned level crossings. In addition if he does not acknowledge any warning light within a matter of seconds, all alarms go off and his train automatically stops. That then causes major congestion when the next train is only 7 minutes behind him, so I am sorry the train driver is giving just as much input as you. It takes him/her over 1 year to get his/her licence, and then has to complete another 300 hours before he/she is allowed out alone.
So I respect your input, but don't assume that it has to be the only argument in town.
Cheers