seems like WVO in a two tank system and a bit of LPG is the best in this case for cutten cost.
do to the long 120 mile round trip drive.
using battery's for this reminds me of my electric skidder idea
LOL
just not a good idea, unless you have a small engine to feed the batterys, and charge them at each end of the drive, vea grid power.
that's my thought on the matter.
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1 86 T\D trooper with rare GEN 3 rods
TRANS FIXED 
NOW DD
1 86 4WD 5sp pup is 2.3L gas, but plan on 2.2L diesel repower
1 91 trop, long term plan is a group buy of imported Isuzu 4JB1-T 2.8L I-4 engines, hoping to get price down to 2K not 3K plus
1993 sidekick my MPG toy, epa rating 26.
i get 29/31 with stock drive train.