[quote name='Alpha2']Exactly how does ATV3 use the HDD? I'm sorta conflicted between this and Jak2.[/quote]
Downloadable content. According to IGN, new parts, ATVs, riders, and tracks.
"It's hard to comment on the stability and performance of the network at this point, given that the bulk of the players ready to buy-in to ATV don't even have that option yet, but everything we have played has thus far been smooth and lag-free, but still somewhat dependent on the connections of those we played with. Regardless of that, the amount of presentational consideration that has been applied to Fury is nothing short of astounding for a console title. We have a game that supports the headset, incorporates message boards, chat rooms, instant messaging, and even boasts a functional stat tracker and clan-based play. It's the complete package. As if that weren't enough, Sony and Climax promise full hard drive support that doesn't stop at the enduro tracks players can set their own waypoints on. They imply that anything from new parts to new ATVs to new tracks to new riders are all coming down the pipe. With all of that, ATV 3 will keep its fan base happy for a very, very long time." - IGN review.