Greg Zipadelli (born April 21, 1967) is an American crew chief in NASCAR. He is currently the competition director at Stewart-Haas Racing. Zipadelli is most notable for being the crew chief of the #20 The Home Depot car for Joe Gibbs Racing from 1999 until 2011. He has three children: Zachary Charles, Elwina Sophia, and Gianni Greogry, and is married to Nanette.

Zipadelli began his career in the NASCAR Whelen Modified Tour series, becoming the crew chief for his family's team and immediately winning a championship with driver Mike McLaughlin in 1988, at the age of 21. When McLaughlin advanced to the Busch North Series in 1990, Zipadelli joined him, winning five races during the pair's four-year tenure together, and claimed another championship in 1997 as the crew chief for Mike Stefanik. But his greatest fame and success would be achieved when he joined Joe Gibbs Racing in 1999, partnering with IndyCar Series champion turned NASCAR rookie Tony Stewart. Their accomplishments include the 1999 Rookie of the Year title, winning a stunning three races, a feat which has only been tied by Jimmie Johnson in 2002, three Chase for the NEXTEL Cup appearances, two championships in 2002 and 2005. The duo of "Smoke" (Stewart) and "Zippy" (Zipadelli) currently have the longest crew chief-driver relationship in NASCAR. However, that relationship ended as of the 2008 Season. In 2009, Stewart moved over to Stewart-Haas Racing to drive the #14 car. JGR Nationwide driver Joey Logano took over the driving of the 20 Home Depot Camry, with Zipadelli continuing as crew chief. As of December, 2011, Zipadelli moved to Stewart-Haas Racing to reunite with Stewart, but as competition director, not as crew chief. Steve Addington, also a former JGR crew chief, heads to SHR in 2012 to fill the role of crew chief for Stewart's No. 14 Chevrolet. It was later announced that Zipadelli would be a part-time crew chief for Danica Patrick in the Daytona 500 in 2012, with her later 9 races undecided.

Austin Dillon (born April 27, 1990) is an American stock car racing driver. He is the son of former driver and RCR general manager Mike Dillon and grandson of Richard Childress.

He currently drives the #3 AdvoCare/Bass Pro Shops/American Ethanol Chevrolet Impala full-time for Richard Childress Racing (RCR) in the NASCAR Nationwide Series. After winning Rookie of the Year in the Truck Series in 2010, Dillon won the Truck Series championship in 2011. Dillon is also the co-chair of the Reagan Foundation's National Youth Leadership Committee. Dillon's younger brother Ty Dillon races for Richard Childress in the Camping World Truck Series.

Dillon was the 2008 Sunoco Rookie of the Year in the NASCAR K&N Pro Series East after one win at Greenville-Pickens Speedway, one Pole and ten top-10s in 13 races. In 2008 and 2009, he drove the #2 Chevrolet Impala part time for Richard Childress Racing in the NASCAR Nationwide Series with sponsorship from Chevrolet. His career best finish was 4th at Memphis Motorsports Park in 2008.

Mark Anthony Martin (born January 9, 1959) is an American stock car driver. He currently drives the #55 Aaron's Toyota for Michael Waltrip Racing in the NASCAR Sprint Cup Series on a part time basis. He has the second most wins in the Nationwide Series with 49. He has finished second in the Sprint Cup Series standings five times and has been described by ESPN as "The best driver to never win a championship."

Martin began his racing career as a young man on the dirt tracks of Arkansas. He moved on to asphalt racing and joined the ASA racing series. During his ASA career, Mark raced against Dick Trickle, Jim Sauter, Joe Shear and Bobby Allison. Mark went on to earn Rookie of the Year in 1977. Mark rounded out his ASA career winning twenty-two races and four championships (1978, 1979, 1980, and 1986).

Martin had a tumultuous beginning in NASCAR, driving for six different teams from 1981 to 1987. He made five starts in 1981 driving for Bud Reeder, earning two pole positions at Nashville and Richmond and finishing third in his final race at Martinsville.

Joseph Thomas "Joey" Logano (born May 24, 1990), nicknamed "sliced bread" (as in the greatest thing since) by Randy LaJoie, is an American stock car auto racing race car driver who currently drives the #20 Home Depot/Dollar General Toyota Camry in the Sprint Cup Series and the #20 GameStop/Sport Clips Toyota Camry in the Nationwide Series for Joe Gibbs Racing.

Logano's first major NASCAR win came during the Meijer 300 at Kentucky Speedway in just his third start in the 2008 Nationwide Series. Logano made history becoming the youngest driver to win a Nationwide Series race at &1000000000000001800000018 years, &1000000000000002100000021 days old. The previous youngest was Casey Atwood in 1999 at &1000000000000001800000018 years, &10000000000000313000000313 days. Logano became the youngest winner in Sprint Cup Series history when he won the 2009 Lenox Industrial Tools 301 at New Hampshire Motor Speedway at &1000000000000001900000019 years, &1000000000000003500000035 days. The previous youngest was teammate Kyle Busch in 2005 at &1000000000000002000000020 years, &10000000000000125000000125 days. Logano is now the youngest winner in two of NASCAR'S three top divisions. Logano is also the first NASCAR driver to be born in the 1990s to compete in NASCAR's three major divisions.

Massimiliano "Max" Papis (born October 3, 1969 in Como, Italy) is a racing driver who has competed in several top-level motorsports events such as Le Mans 24 Hours, Formula One and Champ Car. He has three Champ Car victories. He is the son-in-law of Emerson Fittipaldi. His son's godfather is fellow Italian Alex Zanardi. He currently drives the #9 Geico Toyota Tundra for Germain Racing in the NASCAR Camping World Truck Series.

After a spell as the Lotus team's test driver in 1994, Papis replaced Gianni Morbidelli in the Footwork team for seven races in the middle of the 1995 Formula One season, as he brought valuable sponsorship to the cash-strapped outfit. Despite being a race-winner in Formula 3000, he often struggled with the unfamiliar car, and was occasionally outpaced by his much-maligned team-mate, Taki Inoue. He also proved to be an unlucky driver, suffering a spectacular puncture and suspension failure on his début race at Silverstone due to clipping the pit lane wall after a tire change, being left on the grid at Hockenheim due to a transmission failure, and spinning on dust and oil kicked up by David Coulthard at the Ascari Chicane on the first lap of the Italian GP, causing a pile-up and a restart. However, he only missed out on a point in the restarted race when he was overtaken by Jean-Christophe Bouillon's Sauber on the last lap. When Morbidelli returned, Papis was out of a drive and headed to America for 1996.