Nick, I suspect it is money driven. I know when the maker proposes to "offer" to supply the vehicles, it's actually 10 to 12 cars! Plus they pay for the "privilege" and the exposure. This is why the "official" pace car is then offered as a copy for purchase around the country, help offset the costs and hopefully make some money right?!?!

I remember reading this in Mustang Monthly in regards to the 79 Mustang Pace Car. A bit of an eye opener for me then.