Carpentier has 14 Nationwide series since 2007, but his only series appearance in 2010 was at the Montreal road event with Diamond-Waltrip Racing.
"With the confirmation of my ride in the Nationwide race in Montreal with Michael Waltrip's team [in] August, it's two good news items," said Carpentier after announcing his Sprint Cup return. "This latest news makes for a fantastic end of the month of May."
The month did have a rather embarrassing blip at Indianapolis
, when at the suggestion of compatriot and good friend Paul Tracy he was called in by the struggling Dragon Racing team on qualifying weekend to help them try and sort out their chronic set-up problems. Carpentier, a veteran of the ChampCar series from 1997 to 2004, had last entered the Indy 500 in 2005.
In the end, all he was able to do was prove team driver Scott Speed's assertions that the car was too dangerous to drive, then he put the #20 into the wall after two dozen practice laps. The accident wrote off Dragon's sole remaining chassis and forced them to pull out without completing a single qualification lap in 2011.