Cadillac is on top at General Motors' home IMSA round after Earl Bamber took pole for the Chevrolet Detroit Sports Car Classic.
The 35-year-old New Zealander drove Whelen Cadillac’s #31 V-Series.R to a quick lap of 1m05.313s around the 1.645-mile, nine-turn street circuit. This is Bamber’s third career pole, first in GTP.