It's difficult to understand that who wants to sell whose car? Anyways, it appears that you sold your car to someone, and now he's selling it further. And obviously, he is using your pics because he probably thought that he could do it since it's the same car. And here, you're right that he should take own pics and post these.
By the way, the detail he's giving is more than I've ever seen. To me it's not understood how he knows this much about this car in such a short time period???
