NASCAR... A History Part 3 "The 1970's"

   The 1970's.   The sport is growing and by 1971 Winston comes on board to be the main sponsor and saw 1970 as the last year any dirt tracks were on the schedule.  In 1972, the season became significantly shorter and this became the new norm.  Names like Cale Yarborough, Petty, Bobby Allison, Darrell Waltrip and David Pearson dominated the sport this decade.  By 1979, Richard Petty won his 7th and last championship, and a new player was on the horizon.