I have already stated that the nature of man is corruption and greed. In your example, the car and its purpose do not matter, only the choices of its users matter.
If Newt wants to say the drivers of the car are unethical, then he should say that.
But I expect he would say that the people are driving an unethical car, and that makes about as sense as “ethical capitalism”.
The failing of your argument is that both the car and capitalism presupoose users-it’s endemic to the concept. If you don’t think so, pleased define conceptual capitalism without reference to markets. And then, define markets without reference to goods, and the manufacturers of the same, and the end users.