This video shows that you have to pay attention well before the race start. The camera is onboard the WRR Radical SR3, which qualified 6th in this NASA Texas race at MSR Houston. Ahead is a white Porsche Cayman, which qualified 5th. Because pole at MSR Houston (clockwise) is on the right (inside), all cars qualifying in odd positions (3rd, 5th, 7th etc) must line up on the right side of the grid. But the Cayman is far left at the end of the Carousel, which prevents the car behind from lining up correctly. The result is that the cars are not in 2 x 2 formation entering the pit straight headed toward the starter's stand. The starter correctly calls off the start.