I was with BMW 20+ years.
Got to do schooling on their electric hybrids and hydrogen regen cars in development.
Seeing all the Warning High voltage! And Death stickers everywhere brings back memories, and the mythological step by step working procedures during repairs on theses vehicles was engraved in your brain by the time they were finished!
It didn’t really take off till after I left BMW in 2008.
But then I taught advanced technologies at NTI . For 4+ years after that …
ohms law applies everywhere in every facet in one way or another especially in plasma cutters.
I miss the classroom and the fresh impressionable minds you got a chance to help mold into professional technicians…
Arc voltages is easy enough to relate to spark plugs and plug gap settings to put it in its simplest form for discussion. 
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