Need for Speed: ProStreet Easter Egg - Nfs Carbon Reference

On Race Days that are commentated by "Big J," the first commentator you get in the game, on rare occasions, if you wait long enough on the main race day screen (where there are choices for races etc., and he talk about random things, previous race... etc.), he will say "There is a car parked in front of the showcase tent with the numberplate N F S C A R B N [read out as letters] I repeat...."
This is an obvious reference to the previous title Need for Speed: Carbon. (The cars from most of the modern titles bear the name of the game in some form, usually shortened. eg: PROSTREET for this game.)