The Petit Le Mans, a sports car endurance race held annually at Road Atlanta, will crank engines beginning Sept. 30. Tickets start at $40. The race covers a maximum of 1,000 miles or 10 hours – whichever comes first. The International Motor Sports Association announced that WeatherTech will be the new title sponsor for its top series, changing the name to the IMSA WeatherTech SportsCar Championship, effective Nov. 1. The WeatherTech Championship schedule is anchored by four Tequila Patrón North American Endurance Cup events that end at the Petit Le Mans.