Interlagos’ compact layout, tight Senna S, short run to Turn 1, and dramatic elevation changes produce frequent first-lap contact and debris, contributing to an 86% safety-car rate across recent Brazilian Grands Prix. Variable November weather in São Paulo often brings sudden rain that creates standing water, reduced visibility, and aquaplaning risk, prompting interventions as seen in the wet 2024 and incident-filled 2025 races. These track-specific dynamics and historical neutralisation patterns underpin the 74.5% implied probability traders assign to a safety car appearing in the 2026 event.