DETROIT -

The Detroit school district is auctioning off surplus and obsolete police cars.

A preview of the 18 cars that will be sold, which are Crown Victorias and Chevrolet Impalas, is Wednesday from 9 a.m. to 3 p.m. at the district's police department -- 8500 Cameron Street.

The online auction is Thursday from 8 a.m. to 8 p.m. at Biddergy.com.

Individuals who wish to participate but do not have computer access can contact Biddergy at 866-260-1611 for more information.