The electrification of cars has lead to new automakers popping up all over the place, which is in high contrast to the glacial progress of an industry that's over a century old. The best example of this is Tesla. Counter to this movement, there's a new phenomenon of looking back to the past. We're talking about reviving historical automobile brands, such as what Zagato's doing with the Iso Rivolta GTZ. It is the spiritual heir of the A3/C, a sports car that won at Le Mans in the '60s. Here's what it's all about.