Rudolf Diesel

Born in Paris to Bavarian immigrants, Rudolf Diesel was a mechanical engineer and inventor, most famous for, well, the Diesel engine. His invention revolutionized transportation and industry, making him a household name (at least among engineers and mechanics). His engines were more efficient than steam engines, leading to widespread adoption in everything from submarines to power generators.

Despite the clear German origins of his family and his upbringing, some have, for reasons unknown, speculated about a potential Jewish background. However, historical records consistently show him as a secular German, with no ties to Judaism whatsoever. His family tree is about as gentile as a pretzel.

Kvell-worthiness is high, purely for the sheer impact of his invention. The Diesel engine changed the world, for better or worse, powering global commerce and giving truckers something to brag about. So, while not Jewish, he certainly gave us something to talk about.