This was one of the most successful belly tank cars built.
https://www.google.com/search?q=so+cal+speed+shop+belly+tank&hl=en&client=firefox-a&hs=mLl&rls=org.mozilla:en-US:official&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=MktbUKGKL-TI0AHdgoHAAg&ved=0CE8QsAQ&biw=1920&bih=951http://www.bellytanks.com/?p=245The belly tank cars were part of the hot rod culture in Southern California in the 40's through the 50's.
As a kid growing up in the 50's and 60's I remember seeing the old hot rods (including a belly tank car on the back of a flat bed) driving home on the local roads, covered in dust.
My favorite, the Goldenrod. I saw it in the flesh in the back of the Summers Brothers Machine shop Pomona, CA when I rode along with my friend to pick up a set of high strength axles for his 390 Mercury Cougar.
http://www.racingcampbells.com/content/campbell.archives/goldenrod.htmlMost of the guys who built these cars were ex aviation mechanics and fabricators from the aircraft factories in the Los Angeles area. They had the skills and availability of war surplus equipment to satisfy their need for speed. There is a great book, "Dry Lakes and Dragstrips" by Dean Batchelor that chronicles the efforts of people like Mickey Thompson and Dan Gurney. There is a really good photo of Dan on his way to Bonneville.
Regards,
Dan