Nascar has a long and storied history, but it also has a past littered with "What If?" questions. Join author Mike Mackler as he takes a look back at stock car racing's 100 most-intriguing hypotheticals: -What if Jeff Gordon had gotten a ride in IndyCar? -What if Curtis Turner was never banned by Nascar? -What if restrictor plates were never implemented? and 97 other varieties of the most-interesteing question of them all: "What If?"