AT last, the real reason why Europe's leaders are determined to introduce the Euro. It's obvious if you look at Johann Lanz's car showroom in Italy, according to the International Herald Tribune. A two-door Volkswagen Polo cost the equivalent of $8,562, Mr Lanz explained. But a few hours drive away in Austria or Germany the same car cost about $ 1,250 more.

Governments don't like the bargain-hunting that is growing throughout mainland Europe as a result of this type of price differential, with its implications for the state's coffers, it claims.

The Euro is seen as part of the answer on the basis that you can only have price harmony if you have a single currency. The Margin has decided to hold its counsel.