The Detroit Auto Interiors Show, formerly the Automotive & Transportation Interiors Expo, released final figures today for attendance at its May 16 - 18 event. More than 4,440 automotive industry professionals involved in interior design, engineering and production, attended 21 conferences and talked to hundreds of companies on the expo floor during the three-day event at Cobo Center. Gary DeHart, publisher of Auto Interiors, formerly Automotive & Transportation Interiors magazine, made the announcement.