from wednesday to thursday bringing the national average to $3.61 a gallon. the president's re-election team is now airing a 30-second ad in michigan painting the president as a champion of the auto industry while taking a jab at the candidane candidates hopinge him. >> it's more than a slogan, it's a way of life. but when a million jobs are on the line, every candidate turned their back, they even said let detroit go bankrupt. not him. now, a retooled, restructured industry is back because of the grit and sacrifice of michigan workers. >> don't bet against the american worker. i'm about a robarack obama and this ad. >> you can put a check mark by the president in michigan.