since boats are in the new ep do you think cars will come soon ?

I think we will get cars and possibly not that long to wait. I think the newer worlds seem to have greater areas open to sims to walk before hitting a loading screen. We also know they will go back and change things in older packs, seasons, terraforming, wading in water. So I think there is nothing to stop them, apart from time and the desire, to altering the routing in older packs to allow driving. I read above that horses are more likely, perhaps, but they would also have to be able to route in the open areas. I appreciate they would work more like boats (bear with me here) in that they would just have to be able to walk around open areas, as boats can travel in multiple directions in water. Cars would have to route more directly along roads and on to drives.

When we get them, I think they will be a free update, I truly don't think they could get away with charging after all these years. The cars themselves, as items, will be bought, but the ability to have them will be in an update. I also think late this year or early next.