I would NOT dismiss the 10
I would NOT dismiss the 10 miles of EV range in the new F150 non-plug in hybrid. You can have a conventional hybrid with a much larger battery than what is normally used in hybrid sedans and SUV's. As I own two ford hybrids (fusion and Cmax), I know how these systems preform. To me, having a much larger hybrid battery in a vehicle meant for towing heavy loads and for being used as a generator makes complete sense. If you where towing a heavy load up a hill, you would quickly exhaust the energy of a conventionally sized hybrid battery and the hauling ability would diminish; it also makes little sense to be in generator mode and having a large 3.5 liter engine running all the time, it would not be efficient; it would be more efficient to charge a large battery and cycle the engine. The 10 mile capacity seems logical to me, but I doubt Ford would program the truck to use it's reserves for that purpose, unless it was stop and go city driving, it would seem more logical to reserve that energy for pulling up hill, generator mode and stop and go situations.