Chris Outzen's Ford Mustang Boss 302S comes to a stop after losing the engine on the first lap.

Johnny O'Connell's Cadillac CTS-V R and Mike Skeen's Audi R8 Ultra

Andy Pilgrim's Cadillac CTS-V R

Nick Mancuso's Ferrari 458 Italia GT3, Andrew Palmer's Audi R8 Ultra and Butch Leitzinger's Bentley Continental GT3

Tim Bergmeister's Porsche GT3R and Alex Figge's McLaren 12C GT3

James Sofronas' Audi R8 Ultra and Tomas Enge's Lamborghini Gallardo FL2

Tomas Enge's Lamborghini Gallardo FL2

Tim Pappas' Mercedes-AMG SLS GT3

Henrik Hedman's Ferrari 458 Italia GT3

Michael Mills' Porsche GT3R

Michael Mills' Porsche GT3R and Dan Knox's SRT Viper GT3R

Dan Knox's SRT Viper GT3R

Marcelo Hahn's Lamborghini Gallardo FL2

Robert Thorne's McLaren 12C GT3

Bill Ziegler's Audi R8 Ultra