Jun 14, 2014, 12:49 PM EDT
Rookie Cole Custer shot to the top of the speed charts in the final NASCAR Camping World Truck Series practice Saturday morning at Gateway Motorsports Park.
Custer is just 16 years old and is a development driver for Haas Automation, a division of Stewart-Haas Racing.
Turning a best lap of 136.786 mph, Custer was the fastest of the 28 drivers that took to the Madison, Illinois track, which hosts the race later tonight starting at 8:30 pm ET.
Chase Pistone was second-fastest (136.562), followed by Darrell Wallace Jr. (136.542), Erik Jones (136.281), Gray Gaulding (136.046), Joey Coulter (135.874), Matt Crafton (135.820), Johnny Sauter (135.747), Ron Hornaday Jr. (135.277) and John Hunter Nemechek (135.204).
Struggling for speed were the two slowest drivers in practice, Jennifer Jo Cobb (124.464 mph) and NCWTS rookie Charles Lewandoski (123.254).
Follow me @JerryBonkowski
Video from NASCAR America
- Rosberg reflects on a tough day in Singapore (VIDEO) 1
- Reports: 2015 Sprint Cup rules package expected to be released on Tuesday 0
- Hamilton rules in Singapore to re-take championship lead as Rosberg retires 0
- Rosberg forced to retire in Singapore after electrical glitch 0
- Brendan Gaughan takes lead with 6 laps to go, wins Nationwide at Kentucky 0
- 16-year-old Cole Custer becomes youngest-ever winner of NASCAR national series race 1
- F1 Qualifying Analysis: Missed opportunities allow Hamilton to rule again 0