Speaking of the Russian weiner cooker, we had a commercial model when I was growing up. It had an interlock such that one could not easily zap themselves. If I recall correctly, we could stack up to six hot dogs in it for cooking at a time. This
isn't quite what I remember having, but it was probably similar.
When I was a Boy Scout we used to wrap hamburger, onion, carrots and sometimes cheese in tin foil and set it securely on the car's V8 motor; we'd have a cooked meal by the time we got to the campsite.
My brother has an all-electric car, and as such it relies on resistance heat to warm the interior. This really kills the available range, and conversely using the air conditioner for cooling is not much better. it's a great concept, but IMHO still has a long way to go to thrive in the current transportation environment.
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Now: 2019 Winnebago 2500FL w/e2 WDH;Sold: 2015 Bullet Premier 19FBPR (shown)
2012 Ford F-250 Lariat Super Duty Crew Cab (gas 6.2 L, 3.73 gear ratio 2WD, 172" WB)