Koz was born in 1970 making him 11 when Cannonball Run came out. I am guessing that it was a family favorite. I would actually venture to bet good money that Koz wore this costume for one or more Halloweens. I would take even further and say that this character made such an impact on Brian that 26 years later he dared his BFF to take on Victor Prinzi's alter ego, Captain Chaos, so that he could keep it alive forever. Dun dun DUNNNN!
So now with the mystery solved, let us all enjoy the original Captain Chaos, Mr. Dom DeLuise.