The Police have stated there might be a black Cadillac involved. Nowhere does it state that this information came from the husband. If not the husband where did this car description come from?
All I've read is that Amber allegedly told her husband and family that she felt she was being followed by a black Cadillac leading up to her disappearance. Who informed investigators about this (was it corroborated by the husband AND Amber's family?), I don't know.
Maybe a Black Cadillac appeared on surveillance cameras during times correlated to when these notes would appear?
Maybe, but that's speculation.
Have they been unable to connect the car to the husband? If so, that leads me to also believe it is real.
Again, speculation. It could be that investigators mentioned the Cadillac purely because there's no other leads.
It sounds so far fetched but that’s exactly why it’s hard to believe that it’s the story someone would CHOOSE to come up with. AND THEN continue to stay in the country when you have the option to flee.
I take it that you have never heard the principle of the "Big Lie"? When you tell a lie that's so incredible, some people will come to believe it, because who would honestly make something like that up? Your post is a classic example. You are giving Zhang the benefit of the doubt because his version of events is too farfetched to be untrue?
What do we know?
The husband was allegedly rendered unconscious instantly by a substance that doesn't exist.
The husband alleges that the captors left notes telling him to clean up the apartment.
The husband alleges that the captors left notes telling him not to contact the police.
The husband alleges that the captors left notes telling him to leave town for two days.
The husband is statistically and probability-wise the likeliest suspect.