Allow me to be doubting Thomas too... On both the Dusy trail and the Rubicon trail my speeds were <1mph, never touched the brakes much and I used all 20gal of fuel on both trails. I would be surprised if they pull a rabbit out the hat with EV on the trail (aka trail rated), my guess it will be like the minivan, a few miles electric and the rest is the hum of the generator - engine. I just hope there is no battery fires on the trail, that would be a mess..You don't use brakes much at all in 4L with 4:1 or deeper gears.
With an ICE, in 4wd...you get several TIMES worse gas mileage....single digits while on the trail. No idea on electric, but 50-60 miles of range with ICE on road, means probably 15 miles at best on the trail. Luckily, most of our actual trails are 1-3 miles long....but getting to them sometimes necessitates a 20 mile or more trip on fire roads....a good portion of which requires 4L due to the inclines and rough nature of the "road" itself.
My *guess* is the PHEV will be fine for most trail running in the US. Though personally, I'd conserve the electric powertrain for obstacles where the instantaneous torque (IT) might be an advantage...if that's even possible. Again, no idea how the system works....and like I said in other threads, IT *might* make for a lot of broken parts, depending on how responsive the system is. We simply won't know until it's out....but I'd bet Jeep engineers will have the IT tuned down to the point where that's unlikely to happen....which then will kind of negate the feature frankly.
This kinda reminds me (again) of the whole Diesel debate on "fast" it would be.. FCA is not Tesla.. for one, I am keeping my expectations in check..'
But hey this is cheaper and funnier than gambling in Vegas!