While searching for sources of diecast brand history, I came across this article in Sports Illustrated (Fall 1970), comparing Mattel’s Hot Wheels to Topper Toy’s Johhny Lightning. Though it was an interesting read. Especially so since Toppers Toys files for bankruptcy the very next year. Oh, umm, cover image, umm.....there.

http://www.hot-wheels.mlmoments.com/JLvsHW.htm