It turns out, the team had other plans. One of the other photographers mentioned offhand that the GTM was being rebuilt, and I went to see for myself. Sure enough, I got to their paddock space to find them hard at work.
The car had caught fire at around 11:20. This photo was shot at 22:00. During the intervening period, they had removed all of the fire-compromised components from the car, and had also sent a subset of the crew on a 5-hour round trip to fetch their backup engine and other replacement components.
In the photo, the team works to run a new engine harness through the vehicle, as the backup engine isn't electrically compatible with the original engine.
NIKON CORPORATION NIKON D7100, f/2.8 @ 32 mm, 1/50, ISO 125, No Flash
© Omari Stephens