The vehicle's performance suffers if Drivers don't charge it. The Data from PHEVs shows that most Drivers don't charge their vehicles. How will this Change with EREVs      The Risk is that range estimates require both a charge and refueling to be realized.  Buyers will have the EV charging penalty, the Gas refueling penalty, and the penalty of having to both, to have max performance and range.  This isn't insurmountable, but it requires buyer education.       See above:  Gas engines are gas engines; you put fuel in them and drive. EREVs are very different.   

The F150 and Super Duty share the same cab, doors, and much of the interior.  They aren't completely separate, though everything below the body as well as the drivetrains are completely different.

And that's probably the use case for 75% of F150 drivers.

What is the current range when towing 8000 lbs.

My f150 tows 11k but the most I've towed was a uhaul dual axle trailer and a golf cart so roughly 3k.  I wouldn't even try more than 8k.

I don't think volume (above a certain number) is as important as having a platform for decades with minimal investments.  Obviously Toyota has an advantage with long running optimized platforms and volume but I don't think it's so far ahead that Ford can't compete.  They just need to engineer with that goal and that's where I think ce1 proved to Farley and the execs that it can be done profitably.  Now just do it and stick with it.  

Yep, I'm in the 70-75% of rated capacity camp.   My Super Duty is rated at 21k or something like that.  If I had more than 15k behind it regularly, I would move up to a dually.  Our fifth wheel is 11k lbs. empty (probably 12k loaded) and no way would I tow that behind an F150.

At high altitudes you can use lower octane due to thinner air.  85 there is probably the same as 87 near sea level. 

I would not even run that in a lawn mower or any gas powered items.