Fisker unveiled a hardtop-convertible two-door variation on the Karma. Fisker Karma puts two 201 horsepower electric motors at each rear wheel, which get power from a lithium ion battery pack with enough capacity to drive the car for 50 miles. When more range is needed, a Ford-sourced turbocharged 2-liter direct injection EcoTec kicks in, turning a generator, giving the car 250 more miles. Specs