Jamie McMurray had no idea what caused his car to wiggle, wobble and weave at nearly 200 mph Saturday night. Whatever the reason, it triggered ''The Big One'' and wrecked more than half the field at Daytona International Speedway. Nearly two dozen cars, including all four Hendrick Motorsports entries, were involved in the massive wreck a little past the halfway point of NASCAR's 400-mile race at Daytona. More...