Petra, you speak of the stacking of heavy vehicles on the M20 in 2015. That demonstrated what happens when only one of the large roll on roll off ports is affected by the disruption.
You should think on if every port in the UK were to be affected in a similar way and that's when JIT distribution would totally break down.
Theresa May spoke on the plans for the disruption to JIT to the chairman of the Commons Committees today and on the Andrew Marr program on Sunday, so it is obviously of great concern to her and those with some sense in the Tory party.
There is also the evidence of last winter when bad weather caused widespread road transport disruption in many parts of the country. That weather lasted for only a few days, but supermarkets throughout the country had many empty shelves for more than a week even after a rapid thaw took place.
However Petra, you carry on believing the same will not happen after a no deal Brexit. Just join the others like yourself and put your fingers in your ears, your head in the sand and invite everybody to jump of the cliff with you.
However, day by day there seems to be an ever dwindling number in Britain willing to join you in that.