This 1989 Camaro IROC-Z convertible has reportedly never seen rain or snow in twenty-nine years, spent twelve of them in a climate-controlled garage, and still carries its original numbers-matching 305 V8 and automatic transmission. Only 3,940 of these convertibles were built in the IROC-Z’s final full year before Chevrolet retired the name. With just 7,630 original miles, it’s one of the cleanest surviving examples from that last run. Watch to see what nearly three decades of obsessive care actually looks like.