Round 4 - Austin, Texas, USA: IMSA WeatherTech SportsCar Championship Advance Auto Parts SportsCar Showdown Circuit of The Americas, Austin, TX USA Thursday 4 May 2017 57, Audi, Audi R8 LMS GT3, GTD, Lawson Aschenbach, Andrew Davis World Copyright: Jake Galstad LAT Images
IMSA WeatherTech SportsCar Championship
Advance Auto Parts SportsCar Showdown
Circuit of The Americas, Austin, TX USA
Thursday 4 May 2017
57, Audi, Audi R8 LMS GT3, GTD, Lawson Aschenbach, Andrew Davis
World Copyright: Jake Galstad
LAT Images