PHOTO: NYPD's Chevy Volt

A Chevy Volt marked NYPD patrol car (Photo: NYC Dept. of Citywide Administrative Services)

Forty percent of New York City government vehicles are hybrids or run on alternative fuels. The New York Police Department is exempt from the aggressive environmental vehicle procurement requirements of other city agencies and yet, they have at least one marked patrol car labeled for traffic enforcement.

As a commenter notes, this will be for meter maids and intersection control, not armed police officers.