There's an extra coat of hot wax on Pixar's vibrant, NASCAR-influenced comedy about a world populated entirely by cars. Lightning McQueen (voiced by Owen Wilson) is the slick rookie taking the Piston Cup series by storm when the last race of the season (the film's high-octane opening) ends in a three-way tie. On the way to the tie-breaker race in California, Lightning loses his way off Route 66…