This is the first release of the Hot Wheels Z-Whiz which came out in 1977 – or is it? It seems there is an identical version which was released in the 1978 Super Streeters series. Without the packaging, I guess it’s impossible to know for sure. There are redline versions of the grey 1977 model too, and there is an ulra-rare white version that goes for big bucks. In addition, Z-Whiz was produced up until 1984 in several other colors including the gold chrome variation from 1979.