It's free!
But for the track you've indeed to buy the track pack.
Do you mean by 'it's offline' you don't log in to PSN on that account? You have to do this at least one time in order to be able to select the DLC menu on the start menu screen and select the Track Pack so it becomes 'installed', basically just unlocked.
Also make sure that you updated to 2.07 as it's required to sign in and get the track running. Though I guess it is installed already since the game data is not fixed to one account if it's on the same PS3.
That's exactly what I have done. And played with my DLC cars on the DLC track - Spa
And the update is forced on me anyway so there's no way that hasn't been done.
Could someone with the family pack and car pack unplug their PS3 from the internet and see if the tracks and cars are still available, just wondering if it's everyone or just me? Thanks in advance.
Oh for goodness sake there are two family packs. One for cars and one for tracks. Doh !!!!