A plug-in-hybrid really is a smart option
- 90% of the time, you are just daily commuting with relatively short miles and a truck with 100mile battery range is fine.
- 10% of the time, you exceed the battery range but it's a non-issue as the generator kicks in and you can go as long as you want.
Honestly, the generator is probably overkill but more for marketing. A little 50kw generator would solve most of the issue. Just need some programing that integrates with the trailer brake controller and GPS...the truck does some calculations and if you will exceed the battery range, it kicks in the generator from the start of the days drive rather than waiting for the battery to run down.