So, the Oakland Raiders are prepared to pack up their silver-and-black bags, back up the diesel transporters and truck to Las Vegas. The billion-dollar NFL question is: when? No one knows for certain – not even owner Mark Davis. By a landslide 31-1 vote, NFL owners Monday approved the franchise’s second departure from the Bay Area, this time to the growing Las Vegas metropolitan region. The Miami Dolphins were the lone dissenting vote but no reasons were given.