Um, how about the SCCA logo? No, wait, that would be USAC... hang on a sec, the NASA logo best means club-level rallying these days... dang it, maybe it's SCCA after all... ah, now I remember, it's the Roots of Nascar graphic you want. Or maybe.... aww, chrome... maybe you'd be better off just picking a dusty car!
My first idea was a headshot of Jesus Rules (hey zeus roolez)with wrenches forming a crucifix behind and a headshot of Satan, Dark Lord whatever with a steering wheel behind. Not sure if I like it that much yet.