The V-Series.R seemed to have a clear single-lap pace advantage in qualifying for the 24 Hours of Le Mans, but there is a caveat.

Detroit thunder rolled across the Circuit de la Sarthe as Cadillac won its first Le Mans pole, a feat last accomplished by a Detroit carmaker in 1967.

The No. 4 Porsche, where Felipe Nasr and Nick Tandy will try to add a Le Mans victory to wins in the Rolex 24 at Daytona and Sebring 12-Hour, starts fifth. Laurens Vanthoor, starting 21st in the No. 6, will also try to complete endurance racing’s triple after co-driving with Nasr and Tandy in Daytona and Sebring.