another interview with ian bell
heres a bit from it
Will the difficulty setting be as accurate as other sim games?
IB: SHIFT is built on the most advanced physics engine we've made, and is by far the most advanced and realistic physics engine of any of the mainstream racing games. We're talking about an engine that can run unlimited threads, detailed physics parameters running at around 400 Hz on consoles. Things like tire deformation based on g-forces, tire pressures, rubber thickness, which only the most diehard sim fans will notice, but we know it's there.
We have a full realism hardcore mode called Pro that you can choose to race in from the start that will feel natural and comfortable as well as raising the bar for handling compared to anything out there (or due out soon) for all of our hardcore race sim fans. This can be combined with one of three AI difficulty levels, and on the Hard setting, the AI will fight extremely hard and give no quarter - even the most talented racers out there will find a great challenge here. The AI will block your pass attempts, take places back, make mistakes and end up overcooking corners, and will hold a grudge against you if you are too aggressive towards them.
You'll really get to know these drivers and rivals over the course of the game, and they'll get to know you and your unique Driver Profile.
car physics: will each different car model have a dedicated physics file? How many car and physics file in NFS Shift?
IB: Yes, each car has its own unique physics file, plus there are unique files for suspension types, tire types, gearbox types, turbo/supercharger types, engine types, etc. There are more than 500 separate physics files in the game as of now, many with dynamically changing aspects. This huge collection of files allows our physics programmers to create a detailed and realistic simulation of all of the key defining factors in car behaviour and many of the more subtle details that are missed in nearly all racing games. This is the difference that makes a player say "this just feels right!" when playing SHIFT. For example, when the tyre sidewalls flex under load in a corner, it minutely changes the shape and location of the tyre's contact patch, which in turn changes how the tyre grips the tarmac as it strains to keep hold. Without details like this a driving game can still be fun, but it can feel sterile and dead. With SHIFT we're pushing the limits of physics processing on consoles, delivering a racing experience that is alive, gripping, visceral, and believable.
http://www.drivingitalia.net/articoli.php?sez=software&id=93