If you want to see how far back R/C racing goes, check out Gene Husting's web site -
http://www.genehusting.com/
Gene statred AE with Roger Curtis. He has some great DVDs on his site that track racing back to beginnings of R/C technology in the late 60's/early 70's. Personally, I'd love to see some of the movies from the late 80's and early 90's, including the off road world's from St Ives!
Cheers,
Scotty P.