Overview

• NASCAR's 'run what you brung' concept, which allowed unrestricted car modifications, was abandoned after teams cited multi-million-dollar costs and lack of long-term benefit.
• Denny Hamlin estimated his team would lose $2 million pursuing the proposal, far exceeding the $1 million winner's purse.
• Teams highlighted that modifications would render cars unusable in future points races, making the effort a one-night-only experiment with no season-long utility.
• The 2025 All-Star Race will instead feature a promoter’s caution rule, allowing a yellow flag to be issued between laps 110 and 220 to enhance drama and unpredictability.
• Critics, including Jeff Gluck, argue the promoter’s caution undermines racing integrity, raising concerns about manipulation and fairness in the non-points exhibition event.