Motor sports are largely banned in Switzerland due to a law passed in 1955 following a tragic accident at Le Mans that killed 83 spectators. The Swiss government enacted this law to prevent such accidents from happening on their soil. Since then, only electric motor sports have been allowed, with a few other exceptions. Despite many attempts to overturn this ban, it has remained largely in place due to concerns about safety and noise pollution. It's a unique situation that reflects Switzerland's cautious approach to public safety.