"I would walk away earlier, before it got out of hand," the Richard Petty Motorsports driver said Thursday, referring to his scrap with Casey Mears after last weekend's NASCAR Sprint Cup Series event at Richmond International Raceway. NASCAR responded with penalties Wednesday, fining Ambrose $25,000 and Mears $15,000, and placing both drivers on probation through May 28. Looking back at the previous Saturday night, the two-time winner in NASCAR's premier series said he had no regrets about standing up for himself. More...