31 August/1 SeptemberThe FIA World Endurance Championship returns to action for the first time since Le Mans with the 6 Hours of Sao Paulo. The trip to Brazil is the first of five events outside of Europe that will close the season, all of which are live on Motors TV. Audi have certainly held the upper hand in LMP1 this season but Toyota will hope they can repeat the maiden triumph they secured at Interlagos last year.There’s a double dosage of live sportscar action this weekend with the latest round of the American Le Mans Series taking place on the streets of Baltimore. Pickett Racing might be dominating the P1 class but there’s plenty of action elsewhere including the GT battle, where the SRT Viper squad defeated Corvette and BMW to score a first win last time out.We’ve also got coverage of the Superstars International Series which arrives in Britain for round six at Donington Park with both races live on Sunday. Italian aces Thomas Biagi, Gianni Morbidelli and Vitantonio Liuzzi are locked in a fight for the title but British favourite Colin Turkington could get in amongst them as he makes his category debut in a BMW.Back in the United States there’s delayed-as-live coverage of the latest stop on the NASCAR Nationwide Series schedule at Atlanta. Sam Hornish Jr, Austin Dillon, Elliott Sadler and company will continue their closely fought tussle for the crown while Kyle Busch tries to record his tenth win from 18 starts so far this season.There are also highlights of the V8 Supercars round at Winton and action from the Porsche Supercup races that supported the Grands Prix in Hungary and Belgium. Closer to home the British Supermoto Championship provides rallycross-style mixed surface thrills on two wheels, while fans of historic four-wheeled machinery can catch the Classic Touring Car Racing Club Festival and Roger Albert Clark Rally Championship.Saturday 31 August09:00 British Supermoto Championship, Rd 1, Three Sisters11:05 V8 Supercars, Rd 9, Winton13:10 Porsche Supercup, Rds 5&6, Hungary & Belgium13:40 Classic Touring Car Racing Club Festival17:20 Roger Albert Clark Rally Championship, Rd 4, Neath Stages21:15 LIVE American Le Mans Series, Rd 7, BaltimoreSunday 1 September10:50 LIVE Superstars International Series, Rd 6, Donington (Race 1)11:50 NASCAR Nationwide Series, Rd 24, Atlanta15:00 LIVE Superstars International Series, Rd 6, Donington (Race 2)15:50 LIVE FIA World Endurance Championship, Rd 4, 6 Hours of Sao PauloAll times are BST