Yes Off-road should be fun, there will be a good amount of SUVs and rally cars. I think if they really get the flaws of TDU1 under control, they will have a massive winner with TDU2. I loved the first one, with its crappy netcode and limited club features, so if they can fix that and add all those nice things as seen in that preview video, they will have a massive winner. No doubt.
I also read people will able to exit cars and walk around their car or their buddies cars (passengers as well) in first-person mode. Not sure if characters will be visible as they walk around but it kind of would make sense.
And apparently there won't be any bikes at launch in the game, but added later on via patch and/or DLC.