Karthikeyan also collaborated with Kolles on an unsuccessful attempt at the 2009 24 Hours of Le Mans, and he competed in the 2010 NASCAR Camping World Truck Series in a limited campaign.
Karthikeyan je s Kollesom surađivao također i u neuspješnom pokušaju na 24 sata Le Mansa 2009., i također se u ograničenom angažmanu natjecao u prvenstvu NASCAR Camping World Truck Series 2010.