I am from Mars, but your thinking of saving planet Earth need more rational approach than blaming the companies for marketing their products. If that ever has to happen, then companies doing more harm to health by selling junk food, soda, cigarettes, alcohol would be banned and not the car companies.
Marketing is existing since 1800 and it's the only way to sell their product by persuasive manner. Common wake up, you are just 200 years late to realize that it's wrong.