Cadillac Racing; Daytona IMSA test at Daytona Intenational Speedway; December 4-6, 2017; Cadillac DPi-V.R, 1950 Cadillac Le Monstre  and Series 61 Le Mans racers, and 2018 ATS-V IMSA Championship Edition. richard@rprincephoto.com; 631-427-0460; www.rprincephoto.com (©2017 Richard Prince/Cadillac)