From the Daily Press (April 2):
In a rash of similar cases across the country, police arrested a Virginia man who was huffing while driving. Passing motorists became suspicious when the man was unconscious at green light and called the police. Further investigation showed a preexisting condition was not to blame as the man was found with a can of duster in his lap.
The 52-year old man was summarily charged with misdemeanors inhaling drugs and driving under the influence. While police had seen huffing incidents before, this caught them by surprise.
"Duster is a fairly commonly abused substance," an officer said. "But, it's usually used by kids."