I have actually considered this also, I'm in Montana where chargers can be a bit difficult to find. Costco has a "Firman" tri-fuel 9500W generator that occasionally goes on sale/rebate for around $750. It weighs around 200 lbs and has an 8 gallon tank, and more importantly has a 14-50 receptacle. I think it said it would run for 8-9 hours at 50% load, so would be less than that if charging at 40 Amps. I haven't pulled the trigger on this yet, but I think something along those lines would make sense for those of us that might be a few hundred miles between usable charging stations. (I'd rather do this at a campsite than park and wait at a level 2 station all day).
Generator for Lightning
I've been wanting to buy a generator for years. We camp a few times a year and when I'm at the race track a good generator would be helpful. Now that I am picking up my Ford Lightning in a few weeks, I thought it would be a great time to pick one up that I can use for camping/racing and to charge my truck when California turns off the lights. 
What do people have or use out there? Any suggestions? Lookouts?
Thanks!
What do people have or use out there? Any suggestions? Lookouts?
Thanks!
