It's often said that the greatest innovations happen despite significant adversity, and this is certainly true of one of General Motors' crowning achievements, the Corvette Z06. This three-letter Regular Production Option (RPO) code is still immediately recognizable to car enthusiasts worldwide, even today, more than 60 years after it was created. The Z06 was offered as an obscure checkbox on the order form for a specially-optioned 1963 Corvette, and it carried a steep price tag, so only 199 of these legendary cars were ever produced.













