they are all 100% random. it has been discussed and debated hundreds of times in the past 2 years. i can personally tell you that i've gotten all the pink slips from at least 2 different markers. i even went through one playthrough and got all 14 from marker 1.
--- Comparing anyone to [Adolf H.] shows that not only have you absolutely no grasp of history, but it's also a flame, and a TOS violation.