electric lemon

you didn't see the episode, did you?
use a diesel generator as opposed to batteries: lower weight, lower hazard, greater range

And the terrifically slow performance...

Electric or not, after the charge goes down the most power you can draw comes from your generator less inefficiencies.  So if you have a 25 HP diesel generator running flat out into an alternator to a charge controller to the batteries to the motor controller to the motors and finally into motion you lose a fair bit in the 6 power conversions you have to do.   On a Lemons budget I would be surprised if you can get ANY of them above 85% efficiency.  0.85^6 is  0.38 or 38% peak power.   38% of 25HP is pretty awful.

Go for it

Lemons are kinda small. You might get the volts but not the amp-hours you'll need.  So how about throwing a few oranges or grapefruits in there and call it a hybrid? Could smell nicer, too.

On a pound-per-dollar basis fruit is more expensive than normal car parts, but lots of people in Cali have fruit trees they never pick, so you could get all you need and not break the budget.