Detroit (AFP) – A revived Detroit Auto Show kicked off in earnest Wednesday, with US car giants showcasing a mix of gasoline and electric vehicles (EV) ahead of an address by President Joe Biden. Wednesday’s media day opened with presentations by General Motors and Stellantis brands ahead of the speech by Biden, who toured the showroom floor in his latest visit to Michigan, a critical presidential swing state. The presidential visit has boosted the profile of the Detroit gathering, but Biden’s presence also forced a last-minute rejiggering of the schedule in the first Detroit show since 2019 f…