Feuds are nothing new in NASCAR — it's such behind-the-scenes squabbles that make the sport exciting and enticing.
But they can be particularly intriguing when they involve family or teammates.
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From the Earnhardts to famous racing brothers and some of the sport's most successful owner-driver combinations, NASCAR has had classic soap-opera-like disputes over the years.
Here's a look at the family feuds that have grabbed headlines.