The reaction to IMSA's new Daytona Prototype international formula has been overwhelmingly positive since Cadillac, Mazda and Nissan brought the concept to life late last year.Cadillac's stretched DPi-V.R, with its throaty 6.2-liter V8 and sharp bodywork fitted to Dallara's base 2017 LMP2 chassis, has conquered everything in its path during...

Take a look inside each of the brand-new cars that will comprise IMSA's WeatherTech SportsCar Championship Prototype class in RACER's six-part technical preview leading into the Rolex 24 at Daytona. • Tech Profile #1: ORECA 07 • Tech Profile #2: Ligier JS P217 ORIGINS AND PERFORMANCE:The North American combination of...