A glimpse of what it's like in the sinkhole that opened up Wednesday under a wing of the National Corvette Museum in Bowling Green, Ky. National Corvette Museum hide caption

itoggle caption National Corvette Museum

A glimpse of what it's like in the sinkhole that opened up Wednesday under a wing of the National Corvette Museum in Bowling Green, Ky. National Corvette Museum hide caption

itoggle caption National Corvette Museum

Down Went The Vettes: When a sinkhole opened up Wednesday at the National Corvette Museum in Bowling Green, Ky., eight of Chevrolet's iconic muscle cars were sucked in. National Corvette Museum hide caption

itoggle caption National Corvette Museum

An aerial view of the Summer Bay Resort in Clermont, Fla., shows a villa that collapsed into a sinkhole Sunday night. WFTV/AP hide caption

itoggle caption WFTV/AP

Quite a drop: Pamela Knox (in driver's seat) and her car dropped into a massive sinkhole Wednesday in Toledo. She was not injured. Lt. Matthew Hertzfeld/Toledo, Ohio Fire and Rescue Department/AP hide caption

itoggle caption Lt. Matthew Hertzfeld/Toledo, Ohio Fire and Rescue Department/AP

Cousin Kyle Balcom (L) and brother Dustin Bush console each other after the disappearance of Jeffrey Bush into a Seffner, Florida, sinkhole. Edward Linsmier/Getty Images hide caption

itoggle caption Edward Linsmier/Getty Images

After a sinkhole swallowed a man in his bedroom in Seffner, Fla., an engineer tethered with a safety line walks in front of a home on Saturday. Chris O'Meara/AP hide caption

itoggle caption Chris O'Meara/AP

An engineer surveys in front of the home where a sinkhole opened up late Thursday near Tampa, Fla. A man who had been in one of the home's bedrooms screamed for help and disappeared. It's feared he died. Chris O'Meara/AP hide caption

itoggle caption Chris O'Meara/AP