Electric cars/carts
One thing to remember in your choice of a possible lithium battery vehicle (or lead battery) versus a gas vehicle. The batteries have a life that is short for lead and a little longer for lithium. The cost of replacement for the batteries for lead will be in the range of $1000 every 3-4 years and in Lithium could be $2000-$3000 every ? years (probably 5-7). Tesla owners from the first offerings are just now running up against replacement of their lithium batteries at $22,000+ in an 8 year old auto. Batteries also consume electricity for charging, which will happen every night in your outline.
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