Simplify the following text for a Grade 6 native English-speaking person.
Original: William Clyde `` Bill '' Elliott ( born October 8 , 1955 ) , also known as Awesome Bill from Dawsonville or Million Dollar Bill , is a part-time driver and former champion of the NASCAR Sprint Cup Series .
Simplified: William Clyde Elliott ( born October 8 , 1955 ) is a part-time American racecar driver . He drives in the Sprint cup series .