Lamborghini will take its Urus SUV racing, and on Saturday it debuted a preview of the mean green racing machine in the form of the Urus ST-X race concept. Lamborghini showed the Urus ST-X concept at its Super Trofeo 2018 World Finals in Vallelunga, Italy. The concept previews the race-ready SUVs that will compete in a new one-make series in 2020…