What once seemed to simply be a ridiculously extravagant concept for a plug-in hybrid has now become a ridiculously extravagant reality -- Porsche has just announced that it's putting the 918 Spyder into production. First unveiled at the Geneva Motor Show earlier this year, the car (in concept form, at least) packs a 500-horsepower V8 and a pair of 109-horsepower electric motors that should let you get about 78 miles per gallon, or a total of 16 miles of driving straight from the lithium-ion battery back. The cost? That hasn't been officially announced yet, b
