Wow. I have two Model S's and original Roadster. Been driving electric since a 2011 LEAF and never thought I'd go back to gas, but I ended up buying a 2014 Jeep Cherokee Trailhawk over the summer - mostly for the off-road capabilities. I like the Jeep much more than I imagined - especially coming from Tesla's - and have taken it off-roading a couple times already on what I would consider tough trails (others with more off road experience would probably consider the trails easy).
However, in daily driving around the Big Island (where I keep the Jeep), I find it a frustrating that it's not electric and I hate going to the gas station. I've said multiple times I wish the Jeep were electric so this news is very exciting to me! If they use the Tesla skateboard design, there better some really good skid plates and strong battery protection for off-roading.