Does forza motorsport 3 have a crew chief that talks to you and can you pit with any car on any track?

i was wondering before i bought the game did forza motorsport 3 have a crew chief and are you able to pit with any car and any trackDoes forza motorsport 3 have a crew chief that talks to you and can you pit with any car on any track?
No, there is no crew chief or anything, however you can enter the pit stop with any car on any track. You usually don't have to though unless your on an endurance race and run out of fuel and the tires have a lot of damage too. Or if you have simulation damage on and you have a really bad crash and your engine or whatever ***** up a little bit you can go in for a repair. Most people use rewind when that happens though.