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In page Stock car racing:

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The era drew to a conclusion in the 1970s. 1972 brought so many rule changes, it has prompted many to consider this year as the start of the modern era of NASCAR racing.[citation needed] In addition, R.J. Reynolds (the tobacco conglomerate) took over as the major sponsor of NASCAR racing (changing the name to the "Winston Cup") and they made a significantly larger financial contribution than previous sponsors. Richard Petty's personal sponsorship with STP also set new, higher standards for financial rewards to driving teams. The sudden infusion of noticeably larger amounts of money changed the entire nature of the sport.