Yes, yes, yes! Karen drives home the difference between mobile and local (and there’s more about the myth of the mobile context).
If you’re making an argument for delivering different content to mobile users, or prioritizing content differently based on their context of use, stop for a minute and ask yourself if you mean local content. And if you do mean local content, then say that. Claiming that your travel example extends to cover the “mobile use case” leaves out millions of tasks and users.
Just to belabor this point: people use mobile devices in every location, in every context. Just because you know what type of device someone is using or where she is doesn’t tell you anything about her intention.