Reminders of him are everywhere. They're in the scores of "3"-clad fans flooding the grandstands, the flapping of Earnhardt flags over infield motorcoaches, and the impersonators who, like their Elvis counterparts, dedicate themselves to their mirrored glasses, moustaches and Goodyear jumpsuits in hopes of most resembling their idol. The wreck that killed Dale Earnhardt is still a moment frozen in time for many. But NASCAR has moved on to even greater heights despite the loss of its last real hero. "We're constantly reminded of him," driver Terry Labonte said. The reminders are in the safety innovations of the past five...