I'm not sure about the driving physics, hopefully they choose to either go down the fun arcade route or the simulation route, and don't come out with some mutant between the two that doesn't really work like the first game. But the biggest change I'm looking for is improved sounds, the engines sounded weak in TDU, the sounds didn't carry very far either. If there are Zonda's and Ferrari's racing each other a few streets away from me, I want to be able to hear the echoing howls from their engines, and if I am cruising through some tunnels I want multiple eargasms.