Donate Now! Help PaddockTalk.com build a better site in 2017! Steven Cole Smith, IMSA Wire Service DAYTONA BEACH, Fla. – Despite a test in December followed by the Roar Before the Rolex 24 after the New Year, it wasn’t clear who would be fastest in the IMSA WeatherTech SportsCar Championship’s premier class, Prototype , when they hit the track this weekend.