Near the end, the post jumps to conclusions. It starts with 'there is a tariff difference - 2.5% vs 10%, on car imports from europe to the US vs the opposite direction' and then jumps to '... and this explains why there are way more european cars on the road in the US than vice versa'.
This jump is not a reasonable one to make. Car imports and exports are vastly more complicated than this. At best, the tariff situation is one small part of a multi-factor explanation for observed phenomenon, such as how US carmakers do not appear to care about european market demands for cars at all (they do not make many cars that are clearly targeted at the needs of european car buyers), whereas european carmakers make quite a few models specifically engineered for the US market, or at least, there is a real demand for them in the US. But I'm just guessing here - possibly the situation is explained much more simply:
US carmakers make cars that US consumers want to buy and which US culture wants to make. These cars so happen to be designs that almost nobody in the EU wants.
EU carmakers make cars that EU consumers want to buy and which EU culture wants to make. These cars so happen to be designs that a significant fraction of the US also wants to buy.
'fix' the tariff imbalance and I bet almost nothing happens to the relative amount of 'flow' of cars across the atlantic.
This jump is not a reasonable one to make. Car imports and exports are vastly more complicated than this. At best, the tariff situation is one small part of a multi-factor explanation for observed phenomenon, such as how US carmakers do not appear to care about european market demands for cars at all (they do not make many cars that are clearly targeted at the needs of european car buyers), whereas european carmakers make quite a few models specifically engineered for the US market, or at least, there is a real demand for them in the US. But I'm just guessing here - possibly the situation is explained much more simply:
US carmakers make cars that US consumers want to buy and which US culture wants to make. These cars so happen to be designs that almost nobody in the EU wants.
EU carmakers make cars that EU consumers want to buy and which EU culture wants to make. These cars so happen to be designs that a significant fraction of the US also wants to buy.
'fix' the tariff imbalance and I bet almost nothing happens to the relative amount of 'flow' of cars across the atlantic.