Challenge for Cadillac: Who would be their power unit supplier in '26?

Cadillac Racing - part of General Motors - are set to become the 11th team on the Formula 1 grid. As early as 2026, the US team's first car will compete at a Grand Prix. In the run-up to their F1 debut, however, there is much work to be done, with one choice that has to be made in the shortest possible time: Which engine supplier will GM team up with?