The story was clever but what I found most interesting was the mention of a fiction book called Tom Swift and His Electric Runabout. Indy says Tom Swift, the young inventor protagonist of the adventure book series, invented a "lithium and potassium hydrate" battery that took his electric runabout to 100 MPH. I had to know more, so I ordered the book (written in 1910) and another called Tom Swift and His Electric Locomotive (written in 1922) for good measure. I'm reading both books right now and I will write about the details of Tom Swift's electric vehicles very soon.
White you wait, I recorded a short clip from the Young Indiana episode with the mention of Tom Swift's battery; you can watch it below the fold.