What is the ruling on establishing a website for selling cars, and what are the Sharia-compliant controls to avoid prohibitions, such as adding pictures of cars being driven by a person—are these considered animate beings—or comments that contain insults and curses directed at agents or distributors?

It is permissible to create a website on the internet for cars and other items, provided it adheres to Sharia controls. There is no harm in adding incomplete images that living beings cannot survive with. However, insulting and slandering people without a legitimate Sharia right is not permissible, and the sin falls upon the one who insults or assists them. Merely adding a comment feature is not problematic.