I'm willing to bet he meant something like, "Are you aware that Carsland is not in
Disneyland, it's in a separate park, and your admission to Disneyland won't let you into Carsland?" As in, if you buy a single, non-park-hopper ticket, and use it for Disneyland, then you wouldn't be able to see Carsland. (I could see some people not being aware that you need a park hopper, or more than a 1 day ticket, to see both parks, thinking that the whole thing is "Disneyland". After all, not everyone is as Disney-educated as most of the people around here