Wow. I know most racers have MX experience and train in the dirt, but he looks to have some serious skills!
Good luck to him....but riding is only a small part of rallying, I hear.
Petrucci in 13th after a bunch of the front runners get lost for 30 minutes to an hour!
One article suggested he might be able to rejoin with a large time penalty. I suspect that he would choose to do so, in order to get the experience and figure out if he's fast enough to be a contender next year.
Also a brief mention of Carlos Cecha (in the car class) in this one.