Askyourself
Nothing in any of your posts suggests that you have any knowledge at all of supply chains or logistics, or of the relationship between the UK and the EU.
Supply routes can be changed, alternatives long and short term implemented
Not really. There are a finite number of ports, a finite number of customs officers and a finite number of ships. As Grayling found out last time, signing a multi-million pound contract with a company that had no ships, to sail to a port that had no facilities and no customs infrastructure was not a good idea.
The eu is twice as reliant on us as we are on it
This is just nonsense – I’ll let Theresa May explain: “In a stand-off between Britain and the EU, 44 per cent of our exports is more important to us than eight per cent of the EU’s exports is to them. The economic arguments are clear. Being part of a 500-million trading bloc is significant for us. One of the issues is that a lot of people will invest here in the UK because it is the UK in Europe.”
The uk buy more cars from Germany than any other country,
This is a false comparison. The largest market for EU cars is the internal EU market. If the UK car factories close after Brexit (they cannot build cars if the wheels are somewhere on Felixstowe docks and the gearboxes are stuck in a 50km queue outside Calais) then the UK will actually buy more cars from the EU after Brexit, but pay 10% more for them.
You want to start looking at how many jobs where lost and how many industries failed as a result of joining the eu
Which industries failed as a result of joining the EU? How many jobs were lost as a result of joining the EU? Over the last 30 years, jobs have been lost due to a combination of poor British management, direct government policy (focussing on services and letting manufacturing decline) and an inability to make better things than the competitors make.
On the other hand, Japanese companies have invested billions in the UK precisely because the UK is in the EU (and they have warned that they will be pulling out if there is a No Deal Brexit). Likewise American and Indian companies, as well as the European companies like BMW and Vauxhall that have kept their UK plants open rather than relocating to the mainland. These too will now close.