If the sole proprietor has a second car to meet his/her personal obligations, the use of a car by the sole proprietorship...

It depends on whether this happens due to parental benefit or intense cause. In case of the second, then...

In that case, the taxation takes place at the other country, unless the buyer chooses to be taxed with a Greek VAT number. Then he should declare it to his tax office but also to the supplier before even the import.
So the doctor...

Under the provisions the company should...