"This EMP also shut down radio stations and street-lighting systems,
TURNED OFF CARS, burned out telephone systems and wreaked other technical mischief throughout the Hawaiian Islands nearly 1,000 miles distant from ground zero." - U.S. Congressional Hearings of October 1999; Dr Lowell Wood, of the Lawrence Livermore National Laboratory, explaining the effects of the EMP as then known from the Starfish Prime test experience:
http://commdocs.house.gov/committees...as280010_0.HTM
http://en.wikipedia.org/wiki/Starfish_Prime