Mars and its M&M sponsorship has been a part of Joe Gibbs Racing since 2008. The brand has been&nbsp; a prominent sponsor of NASCAR teams since the 1990s, making its departure especially noteworthy.<br>Busch and M&Ms have been one of the most successful driver/sponsor partnerships in NASCAR, winning two Cup titles together in 2015 and 2019.<br>“One of the great things I love about NASCAR ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/jgr-sponsor-mars-busch-leaving/6933977/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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