He won the 2010 and 2011 American Le Mans Series GTC Drivers Championships and is the president of Pappas Enterprises Inc., his family's four-decade old real estate company.

Running under the Black Swan Racing banner, Pappas debuted a new Doran Ford GT-R for 2008, making six starts in the GT2 category with co-driver Anthony Lazzaro.

In 2011, Pappas and regular co-driver Jeroen Bleekemolen repeated as GTC champions with another four class victories and three second-place finishes in nine starts.

The 2012 season saw Pappas and Black Swan step up to P2 with a Lola B11/80 Honda, leased from Level 5 Motorsports.

While kicking off the season with a podium at the 2012 12 Hours of Sebring an early race accident in the second round of the season at Long Beach led to the team withdrawing from P2 competition due to a lack of spare parts amid Lola's financial administration.