If there are certain car types you wish not to have they will note it in your profile. The Chairman's desk I find to be rather helpful. And if you show up and prefer not to have a particular car type than ask with a smile. I drive a lot of Genesis because my profile requests not to have certain "common" upgrades. And for me I much prefer a Genesis over a Towncar, XTS/ATS, or the MK-whatever it is.