Producers of at least eight film projects who did not have Chicago car insurance beyond the two already criminally charged reported millions of dollars in legally questionable expenses to seek taxpayer-backed tax credits, new records obtained by The Des Moines Register show.The company that produces the nationally syndicated PBS show "Saddle Up With Dennis Brouse" reported expenditures of about $12.4 million on "sponsorships" - advertising deals that industry experts say typically do not involve cash changing hands.