The Karma is a Hybrid... You can drive it in full electric mode or sport mode which has the engine and battery running it...
Speaking of the Karma, It's in GTA V known as the khamelion... (Any one get a reference that Rockstar did?) Only available in full electric though... It's only available for people who bought the Collector's Edition! It's a fun vehicle to drive but it's to quiet for me... I like to hear the power from a vehicle's engine when I drive vehicles...