Thoughts on the type of people(Audio, Visual, ect )
The Sales person brings up mirroring and speaking to people using there specific personality type. I'd have to go back and find specific quotes. It got me thinking that there maybe some other types in the major characters we are prestented with. This is a theme repeated a few times in the book, I'd really like to re-read the book and try to see if it's possible to label each character.
Boosting for example is explained as "an extra noise, pair of eyes, ect" which got me to thinking can a person's communication method be boosting itself.
Rant has an amazing sense of smell this maybe what made him immune (As Casey) to the slick car salesmen's attempt to control the conversation when they first meet on the plane. (Interesting that Rant could have taken a shot to be immune to car salesmen's bullshit...)
Shot has an addiction to boosting, I think that's his perferred communication method.
I've been wondering if there alternate realities are all different due to different people in power, time travelers imposing there perferred communication method on the world. In the world where most of Rant takes place it's a world of boosting. Control signals are beeing sent out to people to make them want to eat cheeze burgers. The rabies may have been a way to overthrow the current power since it made boosting impossible.
The whole party crashing life style also shows there is another communication method that the salesman overlooks, it's the joy of living and dying (very fight club esque).

