IGN did a good write up of Forza 3's career mode. Check it out.
http://xbox360.ign.com/articles/100/1008721p2.html

^fix your link so it goes to page 1

there's tarmac rally and are they racing on a light rail track

I hope they change the career so it feels a little more lively.  Forza 1 & 2 careers made it more boring thatn it needed to be.  And I realy hope they bring back point to point races, since they were my favorite type of races.

Thats awesome!!  This game is gonna be so good!

They said the career will be similar to PGR4 style of racing calendar where you get to pick and choose what you want to do. I am hoping for a more dynamic racing structure where new tracks, cars get add into the season and not just what came on the disc. That is what make Forza 2 career so boring toward the end. You end up racing the same track over and over.

http://www.gamepro.com/article/previews/211476/forza-motorsport-3-preview/

from turn 10's twitter http://twitpic.com/photos/turn10studios


Game still looks great even when taken with a camera phone

I'm so glad the career is revamped.  Forza 2 career got really boring!