The Radiator Springs Grand Prix in Cars 2 was an unofficial, 4th race in the World Grand Prix. All 11 racers were there to race in it. The start-finish line was at downtown Radiator Springs. Most of the track was on a road that seemed like Route 66, but there was a dirt section at Willy's Butte.

After Finn McMissile and Holley Shiftwell allowed Mater to keep his rockets, he was able to join the race.

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