Veeeery interesting how they went from "noooo 100% no they can fuck themselves" to "yes yes its okay" in some weeks. Suuuure thing it's only coincidence that the DOJ started the investigation and allegedly found the group chat of the team chefs.
In addition to things like their competitive LMDh cars, they also have their V-Series performance road cars. The CT5-V Blackwing is the most well known.
GM's decision to throw Cadillac's hat into the ring came with the caveat that its powertrain wouldn't be ready until 2028—two years after it actually wants to enter the sport. That means for 2026 and 2027, Cadillac F1 will use customer engines from another manufacturer, in this case Ferrari. From 2028, we can expect a GM-designed V6 hybrid under Cadillac F1's engine covers.