Seeing as Cockmasters, oops I mean Codemasters have announced that they had no intentions of adding a cockpit view for the gearheads, the PC modding community have come to the rescue to provide what Codemasters couldn't be bothered to do:

http://www.racedepartment.com/forum/threads/work-in-progress.69759/

Having said that, as the thread title says, this is a work-in-progress project that will hopefully be completed without any compromises.