Well the GDP would rise in europe, the stock prices would probably rise, if the HQs of the companies are located in countries that tax the income and see to that tax is not withheld the budget of these countries would rise.

Maybe(big maybe) employment rates would go up, with that immigration would probably as well.

Then merz is a twat, and probably a liar. But what else is new in the world of politics

Or you know, use more sustainable transport methods like the crab of transport, the train