Codemasters have posted their GRID 2 Q&A session with Executive Producer Clive Moody, which focuses on single player and LiveRoutes.
Quote:
Q) Are the crashing and damage physics similar to the first game, and does the driving feel like the firsy Grid as well?
A) Crashes and damage are an essential part of the GRID experience and have a number of improvements. As well as metal deformation we now also have a fully dynamic carbon fibre damage model. We give the player more control as well; the full GRID damage experience that affects both the visual look of the car and performance, or just the visual damage, without any degradation in the mechanics. The driving experience is pure GRID only this time underpinned by our new TrueFeel handling system.
Q) Can a particular LiveRoute be repeated for saved hot laps, or do we just make our own notes and do restarts?
A) LiveRoutes are dynamically changed each time you start a new event and because there are millions of route combinations you are highly unlikely to ever get the same route twice. Once in a LiveRoute event, you are however free to restart as many times as you like and will be able to drive exactly the same layout.