This article at ModernJeeper.com says that by 2020 we could have a JL Wrangler Hybrid... how would you like to be wheeling the Rubicon in that? On the one hand, the torque would be phenomenal, on the other can you get completely through the trail without need for any additional fuel?
http://modernjeeper.com/are-you-ready-to-plug-in-your-wrangler/
http://modernjeeper.com/are-you-ready-to-plug-in-your-wrangler/