Forty-five years after its last Grand Prix, Madrid opens its gates this weekend to Formula 1 — not as a city in need of spectacle, but as one already saturated with it. Built on the bones of an expo center near the airport, the €85 million Madring circuit asks a football-devoted capital whether there is room in its sporting soul for the roar of engines alongside the roar of the Bernabéu. The answer, still unwritten, may matter as much to the future of the sport as it does to the city.