Not sure if it's been posted, I just found it while poking around in my insomnia... http://video.google.com/videoplay?docid=-5851344091937046529&q=hot+rod&hl=en
BTTT This is a great movie! In fact it's the only time I have seen these rods actually running at this lakes meet. Early SCTA stuff is so rare I wish there was more Hats off to whoever found it and put it on Google!
This movie has been on the archive.org website (in high quality) for some time now; http://www.archive.org/details/RoadRunn1952 And there's plenty more vintage stuff to find there. Following link does a search in the Prelinger Archive for the term "hot rod"; "Hot Rod" Search LINK