http://sportscarmarket.com/columns/legal-files/4777-the-fbi-crashes-an-f50the-sequel
A $750,000 Ferrari F50 was stolen, and while it was being held as evidence, an FBI agent and a federal prosecutor took it for a joyride and wrecked it. The owner sued the government, but the judge threw out the case, citing that the government is immune to lawsuits when property is in custody of law enforcement.