LAS VEGAS – Yucca Mountain managers have cut 19 vehicles from the project motor fleet after auditors found up to $9.1 million wasted a year on cars, trucks, minibuses, and work vans, according to KRNV TV. An audit published in May by the Energy Department inspector general found about one in five vehicles was underused — based on mileage or hours on the road. Auditors examined the use of 75 Yucca Mountain project vehicles in 2004. They questioned the use of 15. At the much larger Nevada Test Site, auditors reviewed 191 vehicles in 2004 — and found 20 percent of them also underused. However, test site officials disagreed with the audit, the report said. The Energy Department requires laboratories and project sites to monitor vehicle use and reassign or get rid of those that are underused.