While playing co-op with a friend, vehicles were very buggy. They would bounce around on my screen/ kick me out and pull me back in. May be because of latency (he was the host and saw nothing.) It wasn't really a problem and it was a little funny, until I started driving around alone to search for compound. The truck would randomly teleport into the sky while driving on flat terrain, along with my avatar, then I would teleport back into/under the ground. I lost two trucks this way loaded with items/storage units (they just vanished off the map.) I thought it might be because I was the guest on the server, but my friend's rover disappeared too. Fun game, a little buggy but definitely one of my favorites right now.