Demolition Derby mode:
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Successfully complete the Painting it Orange mission to unlock Demolition Derby
mode.
Head to Head mode:
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Successfully complete the Volatile Situation mission to unlock Head to Head
mode.
Hot Pursuit mode:
—————–
Successfully complete Stock Car Race mission to unlock Hot Pursuit mode.
Racetrack Hot Laps:
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Successfully complete Stock Car Race mission to unlock the Racetrack Hot Laps.
Moonshine boost turbo bonus part:
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Successfully complete the General Confusion mission to unlock the moonshine
boost turbo bonus part.
New carburetor bonus part:
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Successfully complete the Painting it Orange mission to unlock the new
carburetor bonus part.