Something I thought of a while back, but this video added to it - interesting thing at 0:56 It seems like car in front had jumped, but that's just the multiplayer thing - last time info from that player's machine got through, his car was going uphill, so it continued that way until new information was received over network Seems like prediction code takes gravity into account, but not downforce. So here's a suggestion - I think it would be a nice thing to have AI physics applied to other cars in multiplayer. Note I'm talking about "AI physics", not AI itself. It would add a lot of immersion to multiplayer experience and prevent situations like in that video. You would have all the suspension movement and other stuff visible much better than by just visualizing and interpolating what you got over network. Just imagine better reactions of car going over curb in multiplayer. The difficulty here is that it would require information on other car's setup, so it would have to be sent over network. At least wing and suspension settings would have to be included. Engine and tire simulation could be skipped (except for collision detection). Just adding these bumps and impact forces, translating them through suspension and applying downforce should make a lot of difference for immersion in multiplayer.