I mean, in short, the other guy is claiming this is a conspiracy at this point.Funny how it's always the deniers that are asking for proof...
My guess is the 25 mile range is based off of traveling somewhere between 25mph and 55mph, where wind resistance is actually a factor with the box on wheels.
On the trail that is not a factor. And they definitely went to the trailhead using the ICE only, they aren't claiming they didn't. Just that it was able to complete the trail using electric only mode from start to finish.
If you are just going to trash the option, do yourself a favor and don't buy it, nobody is forcing you to. Let the rest of us who are actually interested in it discuss the specs and get excited for a powertrain we've been waiting for.