You had to be there to remember – and to understand – so here’s a refresher. In 1964, group of young Pontiac engineers created the GTO by pairing an expensive big-car’s engine with an inexpensive medium-sized car – thereby creating the first mass-market muscle car. Which was mass-market because it wasn’t just about muscle. That had been done before, by Chrysler (letter series cars) and Oldsmobile, too. What made the GTO different – and dangerous, in the view of a certain kind of killjoy – was that it was cheap. Or at least, affordable. You didn’t have to be a...