Not for sure, do you? The premise of the thread is that he was stopped for driving a white van and it might be possible, although no one knows, that the killer drives a white van. No arrests were made so he obviously wasn't the killer or any other wanted criminal.
No, I don't. But I guess that's the difference between you and me. I assume there was a legitimate reason. You assume there wasn't. Because that is the case, we're never going to agree about any of this, I'm afraid.