Question: what is the difference between an xfinity car and a sprint cup car?
Answer: The NASCAR Cup Series is the old “Winston Cup.” It is the top tier of racing in NASCAR which used to be sponsored by Monster Energy Drink, Nextel, Sprint and R. J. Reynolds Tobacco Company (the “Winston” part of the history). The Xfinity Series is the old “Busch Series,” or the second tier of racing in NASCAR.