City officials are trying to figure out how a woman sneaked into the North American International Auto Show after closing time to pose naked atop the new Dodge Challenger.
It happened around 2:30 a.m. Monday when only workers and security guards were supposed to be inside Cobo Center.
Guards found the woman and about a dozen gawkers taking photographs with camera phones, workers told The Detroit News.
"We heard they were all over the Challenger," said Jason Vines, a spokesman for the Chrysler Group, which earlier had tried to give its cars more sex appeal by bringing in fully clothed "Desperate Housewives" star Eva Longoria to pose at its exhibit.
Cobo Director Glenn Blanton said disciplinary action will be taken if employees were involved in the security breach.