So my half brother surprised the hell out of me and gave this to me for Christmas. Said he got it from a friend we both know who had an extra set who said it was a chase variant because Roddy has grey tires instead of black like the back of the packaging shows. That true? Personally I have my doubts since since toy and packaging discrepancies happen all the time. But this is the only time I've ever seen this set in person, hence my question.