NO, you'll need to wait a rFactor 2 spec 2.0 which will introduce endurance saves to use that feature... Just kidding (thanks PD after a year ehm ehm... )
I've actually asked for that myself. Won't be a short-term thing though, it he manages to do it at all, there's SO much information to be passed into the save file. When he was explaining it to me it made me feel a little bad for asking.
How about a save feature between qualifying and race? At least that would do away with having to re-qualify every time we started a particular race from a cold start. PS this is my first post on these forums although I have been following them for some time. I would just like to add my voice to the many who are very happy with the previews we have been given from time to time. Thanks for keeping us in the loop. Its great to see the sim get nearer and nearer to completion. I will have this on pre-order at the earliest opportunity.