A 'vagonero' is person selling CDs which is being heard from his rucksack, which holds a speaker, he is working within the underground of Mexico city, he is asked to divert his normal work via changing the songs, to a ' Cruisy CD' which he is given and he is asked to go to the section of the pink line where men go and have sexual encounters within the underground as it runs, more sensual music is played for the cruisers.