What is the ruling on disposing of a car that a son bought with his own money, but its documents are in the name of the father who owns a license that permits him to do so, along with the father's power of attorney to the son? And what if the father dies before the ownership is transferred? And is the father obliged to inform the other heirs if he sells the license to the son? And is he permitted to distribute its price among his children according to their financial situations?

Documenting rights and having them witnessed is religiously commendable. Therefore, there is no harm in asking your father to inform your siblings about the car's ownership, to prevent potential disputes. However, it is not permissible for you to be exclusively granted the license, which has financial value, over your other siblings unless there is a valid justification. To avoid this, you can pay your father compensation for the license if he is entitled to assign it for compensation. As for your father dividing the compensation among his children, it is permissible on condition of justice.