Eight valuable 'vettes at Bowling Green, Kentucky's National Corvette Museum fell victim to a 40-foot-wide, 20-foot-deep sinkhole that opened up in the facility's yellow Sky Dome wing. The museum unofficially estimates it caused millions of dollars in damage. Motion detectors alerted security that something was amiss shortly after 5:30 a.m., said museum spokeswoman Katie Frassinelli. An employee who first walked into the room "has been in shock all day," she said. "When you go in there, it's unreal," said Frassinelli. "The hole is so big, it makes the Corvettes look like little Matchbox cars."