crew! UPDATE: An independent drug test on Jeremy Mayfield was negative for methamphetamines, contradicting the results of a NASCAR test taken 40 minutes earlier, the driver claimed in court documents filed Tuesday. In response to NASCAR's claim that Mayfield again tested positive for methamphetamines on July 6, Mayfield submitted an affidavit to the US District Court that said he traveled to Frye Regional Medical Center in Hickory, NC, right after NASCAR collected a sample at his Catawba ...