By now I'm sure most everyone who is anxiously awaiting the arrival of FM3 knows about the several free dlc car packages. I believe so far we have:

1. Free dlc launch day car pack (which I believe has already been discussed here)
2. There is the free dlc car (community designed and chosen Audi R8 5.2 FSI quattro)
you get for pre-ordering at Gamestop.
3. There was the free Zune-liveried Audi A4 Touring Car for entering your ultimate top 10 playlist on the Forza website blog section.
4. And now there is another which is new to me. Follow instructions on the link below from Forza's website to receive: an ODST inspired Beemer, a Crackdown2 inspired Camaro and a very awesome FM3 style Audi R8 V10. Very sexy. Site says you should receive these in your xbox inbox by 11/4/09.

http://forums.forzamotorsport.net/blogs/...r-giveaway.aspx

Just thought I would share in case someone missed it.