I have to give credit where credit is due: the name “brainwagon” was first suggested by Tom Lokovic, based upon the theory of jamming two common words together that were easy to spell. Interestingly enough, when I did a web search to find other instances of the words “brain” and “wagon”, I found that a gentleman named Colonel Goethal had worked on the Panama Canal and had named his railcar “The Yellow Peril” (because of its color) or “The Brain Wagon”.
Too cool.