Very exciting news here from Mercedes-Benz, via Autoweek:
Huge news at Mercedes-Benz: Engineers from its AMG performance-car offshoot are developing a plug-in electric version of the upcoming SLS supercar as part of a broad-based efficiency program to place the automaker at the leading edge of socially acceptable performance-car motoring. Tentatively planned for production in 2015, the new zero-emission supercar draws heavily on the production version of the yet-to-be-fully-revealed SLS scheduled to get its first public outing at the Frankfurt motor show on Sept. 15. – from Autoweek