Sun jammer racing was a sport that involved racing solar wind-driven vehicles called Sun jammers. The Chandrilan Cometary Games was a popular sun-jammer racing event. The con artist Janstren Brell and the criminal organization the "Red & Black League" once committed the exploit known as the "Ursellin Sun Jammer Race Fixings."
Annual sun-jammer races were sponsored by the Kendamari Casinos in the Lol sector, attracting gamblers from neighboring sectors to their casinos.