rubbish. anyone with any sense would go belgium, Luxembourg and not pay any tolls until they got to Switzerland.The route to Italy via Folkstone-Dover/Calais to Italy would have a three figure sum in French motorway tolls. Each way.
The route to Italy via Harwich/Hook and Germany would be toll free.
With the Harwich/Hook ferry, you treat it more like a mini cruise.
You can have a very good restaurant meal on board and wash it down with a fine wine before retiring to your very nice cabin for the night. After a shower in the morning you then can have an early breakfast on board, or after disembarkation you fire up the turbo and you can make the German border in time for a late breakfast.
You will already on the autobahn heading south before your compatriots have got off the ferry/train in Calais
(Or out of the Aire if they crossed the previous night)