Well I have to say for some reasons I don't like the idea for being ensured and for other reasons I do.
For starters it is kind of naive to know that what ever your actions are they havn't got any concequensens. With that I speak for the offline mode.
You simple pay 5% (or something else in that range for the value of your car) and you are good to go to win the race by cutting corners and using the AI as your brakingsystem (allready saw some video's of people doing this)...
On the other hand the online mode. Then we have others that have a valuable car as well. (we assume for now)
Lets say we, 16 people, driving around in Daytona. Suddenly nr. 16 who is 2 laps behind turns the other way and starts Destruction Derby....
I don't have to complete my story to say I am not ammused with this fact...
And trust me it will happen. I am 22 years old and you don't see me messing up others play, but we all know that many people arn't that mature...
I havn't seen any videos of a total destructed car, but like others I just simple wait and see what gives...